EPTSo according to bill, u need about 2000 games on a map to have it's statistics with some reliability.
A 22.6% PGT - R - Point 1.0 [06] 132798
A 20.6% PGT - Rush Hour 2.0 [06] 120992
A 19.3% PGT - Luna The Final [06] 113356
A 16.7% PGT - Neo Forte 2.1 [06] 98433
A 08.8% PGT - Lost Temple 2.4 [06] 51818
A 05.2% PGT - Gaia 1.0 [06] 30375
F 02.7% PGT - Blade Storm 1.5 [06] 15979
F 01.9% PGT - Ride of Valkyries [06] 11182
F 00.5% PGT - Plains to Hill 2.1 [06] 2895
F 00.4% PGT - Neo Requiem 2.0 [06] 2324
So I can look at the relative balances between these, as I did with PGTour's Season 5.
PvZ Blade Storm 44.6
PvT Blade Storm 52.9
TvZ Blade Storm 55.0
PvZ Gaia 45.6
PvT Gaia 50.1
TvZ Gaia 52.4
PvZ Lost Temple 46.2
PvT Lost Temple 49.1
TvZ Lost Temple 52.2
PvZ Luna 44.8
PvT Luna 54.4
TvZ Luna 49.1
PvZ Forte 47.7
PvT Forte 55.6
TvZ Forte 53.5
PvZ Requiem 47.4
PvT Requiem 66.7
TvZ Requiem 49.0
PvZ Plains to Hill 47.3
PvT Plains to Hill 55.0
TvZ Plains to Hill 53.2
PvZ R - Point 46.7
PvT R - Point 50.1
TvZ R - Point 55.5
PvZ Ride of Valkyries 45.7
PvT Ride of Valkyries 54.9
TvZ Ride of Valkyries 51.9
PvZ Rush Hour 43.9
PvT Rush Hour 52.3
TvZ Rush Hour 53.5
II. The Matchups
We can see which map is "hardest" and "easiest" for each matchup by sorting them by matchup.
(worst for toss)
PvZ Rush Hour 43.9 (-6.1)
PvZ Blade Storm 44.6 (-5.4)
PvZ Luna 44.8 (-5.2)
PvZ Gaia 45.6 (-4.4)
PvZ Ride of Valkyries 45.7 (-4.3)
PvZ Lost Temple 46.2 (-3.8)
PvZ R - Point 46.7 (-3.3)
PvZ Plains to Hill 47.3 (-2.7)
PvZ Requiem 47.4 (-2.6)
PvZ Forte 47.7 (-2.3)
("worst" for zerg)
(worst for toss)
PvT Lost Temple 49.1 (-0.9)
PvT Gaia 50.1 (+0.1)
PvT R - Point 50.1 (+0.1)
PvT Rush Hour 52.3 (+2.3)
PvT Blade Storm 52.9 (+2.9)
PvT Luna 54.4 (+4.4)
PvT Ride of Valkyries 54.9 (+4.9)
PvT Plains to Hill 55.0 (+5.0)
PvT Forte 55.6 (+5.6)
PvT Requiem 66.7 (+16.7)
(worst for terran)
(worst for terran)
TvZ Requiem 49.0 (-1.0)
TvZ Luna 49.1 (-0.9)
TvZ Ride of Valkyries 51.9 (+1.9)
TvZ Lost Temple 52.2 (+2.2)
TvZ Gaia 52.4 (+2.4)
TvZ Plains to Hill 53.2 (+3.2)
TvZ Rush Hour 53.5 (+3.5)
TvZ Forte 53.5 (+3.5)
TvZ Blade Storm 55.0 (+5.0)
TvZ R - Point 55.5 (+5.5)
(worst for zerg)
III. Absolute "Fairness"
We can judge the various imbalances if we sort by "difference from 50."
The "obviously fair" means that it was in favor of the race even though it was their "worst", i.e. they won more than they lost, despite it being their "worst."
PvT Requiem 66.7 (+16.7) worst TvP for terran
PvZ Rush Hour 43.9 (-6.1) worst PvZ for toss
PvT Forte 55.6 (+5.6) 2nd worst TvP for terran
TvZ R - Point 55.5 (+5.5) worst ZvT for zerg
PvZ Blade Storm 44.6 (-5.4) 2nd worst PvZ for toss
PvZ Luna 44.8 (-5.2) 3rd worst PvZ for toss
PvT Plains to Hill 55.0 (+5.0) 3rd worst TvP for terran
TvZ Blade Storm 55.0 (+5.0) 2nd worst ZvT for zerg
PvT Ride of Valkyries 54.9 (+4.9) 4th worst TvP for terran
PvT Luna 54.4 (+4.4) 5th worst TvP for terran
PvZ Gaia 45.6 (-4.4) 4th worst PvZ for toss
PvZ Ride of Valkyries 45.7 (-4.3) 5th worst PvZ for toss
PvZ Lost Temple 46.2 (-3.8) 5th worst ZvP for zerg obviously fair
TvZ Forte 53.5 (+3.5) 3rd worst ZvT for zerg
TvZ Rush Hour 53.5 (+3.5) 4th worst ZvT for zerg
PvZ R - Point 46.7 (-3.3) 4th worst ZvP for zerg obviously fair
TvZ Plains to Hill 53.2 (+3.2) 5th worst ZvT for zerg
PvT Blade Storm 52.9 (+2.9) 5th worst PvT for toss obviously fair
PvZ Plains to Hill 47.3 (-2.7) 3rd worst ZvP for zerg obviously fair
PvZ Requiem 47.4 (-2.6) 2nd worst ZvP for zerg obviously fair
TvZ Gaia 52.4 (+2.4) 5th worst TvZ for terran obviously fair
PvZ Forte 47.7 (-2.3) worst ZvP for zerg obviously fair
PvT Rush Hour 52.3 (+2.3) 4th worst PvT for toss obviously fair
TvZ Lost Temple 52.2 (+2.2) 4th worst TvZ for terran obviously fair
TvZ Ride of Valkyries 51.9 (+1.9) 3rd worst TvZ for terran obviously fair
TvZ Requiem 49.0 (-1.0) worst TvZ for terran
TvZ Luna 49.1 (-0.9) 2nd worst TvZ for terran
PvT Lost Temple 49.1 (-0.9) worst PvT for toss
PvT Gaia 50.1 (+0.1) 2nd worst PvT for toss obviously fair
PvT R - Point 50.1 (+0.1) 3rd worst PvT for toss obviously fair
IV. Interpretations
1. We can try to get a grasp on this by looking for opinions that are consistent with these stats:
"Rpoint is imbalanced TvP for T." (ManaBlue) Well, it's the 3rd worst map for TOSS, not TERRAN, out of these maps, and that's by a 0.1% advantage (plus whatever the margin of error may be). The OGN stats say it is fair, and so do the PGT stats now.
2. Many people cry that Luna is super balanced, and others whine. We can see why, for both.
PvZ Luna 44.8 (-5.2) 3rd worst PvZ for toss
PvT Luna 54.4 (+4.4) 5th worst TvP for terran
TvZ Luna 49.1 (-0.9) 2nd worst TvZ for terran
What you could say is that 5.2% is not unfair by today's standards, and certainly 4.4% isn't. Compare this to Gaia, another map loved for its balance:
PvZ Gaia 45.6 (-4.4) 4th worst PvZ for toss
TvZ Gaia 52.4 (+2.4) 5th worst TvZ for terran obviously fair
PvT Gaia 50.1 (+0.1) 2nd worst PvT for toss obviously fair
While Gaia may have two "closer" matchups, the point is that 4.4% is accepted.
What's interesting to note is luna's PVZ. If it is considered fair at 5.2%, the 3rd worst PvZ for toss out of these maps (and why not? it's not much different than toss's BEST PvZ in this list), should we accept 5.2% in general? less conclusive.
3. People have agreed there is a slight Z>P on LT, and a slight T>P.
PvZ Lost Temple 46.2 (-3.8) 5th worst ZvP for zerg obviously fair
TvZ Lost Temple 52.2 (+2.2) 4th worst TvZ for terran
PvT Lost Temple 49.1 (-0.9) worst PvT for toss
The obviously fair meant for Zerg, since it's their 5th worst Z/P MU, despite still having a 3.8% advantage. Point is, in this world, zerg having a 3.8% advantage is relatively good for toss, better than at least 5 other maps in this list! So we should accept 3.8% as fair, in general? It may be slight anti-P, but it's standard. Zerg would bitch about 0%, maybe? And all of these advantages are under 4.4%, which we agree is fair.
4. Ride of Valkyrie is considered "slightly toss:"
PvT Ride of Valkyries 54.9 (+4.9) 4th worst TvP for terran
PvZ Ride of Valkyries 45.7 (-4.3) 5th worst PvZ for toss
TvZ Ride of Valkyries 51.9 (+1.9) 3rd worst TvZ for terran
So either that refers only to PvT, where "4.9%" means slight, or it means that toss having a 4.3% disadvantage vs zerg actually feels pretty good, which is believable. The question is, do terrans bitch about this map vs toss or not? If so, 4.9% is sufficient to cause bitching. If not, we're doing okay.
It seems, so far, that 4.4% or lower do not cause bitching but rather, allow happiness. Above this (5.2%, 4.9%) are inconclusive at this point.
5. People say requiem is free win in PvZ and PvT.
PvT Requiem 66.7 (+16.7) worst TvP for terran
PvZ Requiem 47.4 (-2.6) 2nd worst ZvP for zerg obviously fair
TvZ Requiem 49.0 (-1.0) worst TvZ for terran
The 16.7% advantage is set far apart from the pack, so there's no question of an imba for TvP.
PvZ, while looking slight (a 2.6% disadvantage for toss, actually), may actually be considered "too hard" for zerg? This is interesting, but let's just say that statistically, zerg need to accept this map. They still have the advantage. Why would it be unfair for them?
6. People say bladestorm is too hard for zvt, and also "gay tvp" whatever that means.
PvZ Blade Storm 44.6 (-5.4) 2nd worst PvZ for toss
TvZ Blade Storm 55.0 (+5.0) 2nd worst ZvT for zerg
PvT Blade Storm 52.9 (+2.9) 5th worst PvT for toss obviously fair
So terran having a 5.0% advantage is unacceptable according to good players. Now we're getting somewhere.
And again we see a race complaining of their advantage not being high enough. What does that mean? A 2.9% advantage in PvT is "unfair" for toss?
Maybe margin of error can explain these oddities but I suspect it is just a double standard, one race being expected to win more in a given matchup (BW is traditionally thought of as slight Z>P, slight P>T).
Bladestorm is also the 2nd worst for toss PvZ, at 5.4%. But is this still considered fair and standard?
7. Everyone says P2H is a great, unique map with good balance.
PvT Plains to Hill 55.0 (+5.0) 3rd worst TvP for terran
TvZ Plains to Hill 53.2 (+3.2) 5th worst ZvT for zerg
PvZ Plains to Hill 47.3 (-2.7) 3rd worst ZvP for zerg obviously fair
Toss have a 5 point advantage over terran, but as we have seen, toss are _expected_ to have some advantage so maybe this is why the 5 points is accepted, while in other matchups it's not.
5th worst is pretty good, for ZvT. Zerg only are down 3.2 points to T. We saw people complain about 5. But 3.2 is acceptable. Again, with the margin of error here this might make more sense.
The PvZ falls within the standard we see above. Toss have a slight disadvantage (2.7) but this is relatively a hard map for zerg in this matchup.
So this is what a fair map looks like. Slightly P>T, slightly Z>P, slightly T>Z. but only slightly. These are what people accept. If you saw a map that was opposite these biases, it would be considered "extremely" unfair. P>Z SUCKS, T>P SUCKS, Z>T SUCKS. The community chooses to err on one side in these matters.
We still need to add in "margin of error."
so what we could do is try to map the average as C. the middle of the C grade would be 23545.88.
so (89+70)/2 = 79.5
79.5% grade should equal 23545.88 games. so then the question becomes, what is 100 worth then? 23545.88games/79.5% = Ngames/100.% --> Ngames = 100.% 23545.88games/79.5%
90-100 A 26656+
80-99 B 23694-26655
70-89 C 20732-23693
60-79 D 17770-20731
0-59 F 0-17769
A 22.6% PGT - R - Point 1.0 [06] 132798
A 20.6% PGT - Rush Hour 2.0 [06] 120992
A 19.3% PGT - Luna The Final [06] 113356
A 16.7% PGT - Neo Forte 2.1 [06] 98433
A 08.8% PGT - Lost Temple 2.4 [06] 51818
A 05.2% PGT - Gaia 1.0 [06] 30375
F 02.7% PGT - Blade Storm 1.5 [06] 15979
F 01.9% PGT - Ride of Valkyries [06] 11182
F 00.5% PGT - Plains to Hill 2.1 [06] 2895
F 00.4% PGT - Neo Requiem 2.0 [06] 2324
so much for the 10 point scale.
so (89+70)/2 = 79.5
79.5% grade should equal 23545.88 games. so then the question becomes, what is 100 worth then? 23545.88games/79.5% = Ngames/100.% --> Ngames = 100.% 23545.88games/79.5%
90-100 A 26656+
80-99 B 23694-26655
70-89 C 20732-23693
60-79 D 17770-20731
0-59 F 0-17769
A 22.6% PGT - R - Point 1.0 [06] 132798
A 20.6% PGT - Rush Hour 2.0 [06] 120992
A 19.3% PGT - Luna The Final [06] 113356
A 16.7% PGT - Neo Forte 2.1 [06] 98433
A 08.8% PGT - Lost Temple 2.4 [06] 51818
A 05.2% PGT - Gaia 1.0 [06] 30375
F 02.7% PGT - Blade Storm 1.5 [06] 15979
F 01.9% PGT - Ride of Valkyries [06] 11182
F 00.5% PGT - Plains to Hill 2.1 [06] 2895
F 00.4% PGT - Neo Requiem 2.0 [06] 2324
so much for the 10 point scale.
).
as besides the amount of games it's also obvious the vast majority of games on those maps were played by sucky D/C players. 
