Anecdotal from this thread: http://www.teamliquid.net/forum/viewmessage.php?topic_id=97800
(Breakdown of people's games)
Person A
41 vs terran
92 vs zerg
140 vs protoss
Person B
Against P: 41
Against Z: 58
Against T: 33
Person C
58 vs zerg
72 vs toss
33 vs terran
Person D (KawaiiRice)
88 vs Z
85 vs P
18 vs T
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[Satire]
Clearly, T is underpowered and underrepresented in BW ladder. Why is T so hard to play? How come T can't scout P reliably (Academy is fairly late in TvP) and has to react to P, but P has a ton of instant death allins?
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The fact is that statistics like these are more likely to be correlation than causation. They are more likely the result a number of different factors than just "Zerg is UP, therefore no one plays it".
If you want to have a real discussion about why Z is underpowered, you need to list out the specific builds and timings that are difficult to react to. Which builds are indistinguishable? Can responses overlap? Is this a nonissue on some maps?
Or, if people believe it to be the case that 200/200 food fights are the issue, pick apart the scenarios and quantify what the issues are. Is it because the first 200/200 fight, Z might be on equal base, and not be able to recover in time? Or is it really the case that Z can truly be ahead, but 5*(3+4n) larva is not enough to overpower/cleanup the fight? Or maybe there is a sweet spot of time to wait for larva stockpile. A minor, but related, note is that 200/200 T cannot attack move into 200/200 P either…
The conversation really needs to be brutally specific or there is really nothing of value to discuss. Otherwise, the whole dialog is just one person's word against another's, and we are just terribly wasting reams of bytes, and more importantly, time to get to the root of the problem.