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TVT GSL Why Combat Shield before stim?

Forum Index > StarCraft 2 Strategy
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1 2 3 4 Next All
jlai
Profile Joined February 2011
Hong Kong63 Posts
Last Edited: 2011-08-30 17:42:56
August 30 2011 17:42 GMT
#1
Hi TL,

I have been watching some TVT GSL matches and i do see players getting combat shield before stim. e.g. OptimusPrime.WE VS MVP_Keen Code S Round of 8 Aug GSL

It's not the first time that i see this. Is there any reason behind it? At first glance, my thought would be due to the no. of hits they take from banshee or blue flame hellion before dying. Any thoughts? Does it also depend on whether you want to defend after FE or attack for all in?

Thanks!
nrv
Profile Joined April 2011
United States113 Posts
Last Edited: 2011-08-30 17:44:10
August 30 2011 17:43 GMT
#2
It's faster than stim and good for holding all ins / cheese.
yes
minimalistic
Profile Joined August 2010
Hungary157 Posts
August 30 2011 17:44 GMT
#3
you are more safe against hellions I suppose. And you can get an advantage over other players who go for bio and gets stim. you have 30 seconds? gap between your shield and their stim. Which you can exploit if you are that good.
"A baby Gracken dies every time you use Ghost + Mech" -unknown chat user
Nibbler89
Profile Blog Joined May 2011
884 Posts
Last Edited: 2011-08-30 17:46:02
August 30 2011 17:45 GMT
#4
If you stim without combat shield you get 1 shot by siege tank. Also combat shield marines without stim beat marines with stim but no combat shield.

It's not always better to choose one over the other depends what you want to do. But those are some facts that can affect the choice,
thobel
Profile Joined August 2010
United States37 Posts
August 30 2011 17:46 GMT
#5
Stim is very situational, because it reduces your HP by 10. That can leave marines open to 1 shot kills from tanks, for example. You might not always want to stim, especially on defense... though stim is useful to catch banshees before they retreat.

Combat shield, on the other hand, you'll always use because its passive. I've found that its better when you plan on defending for a bit, especially for fast expand openings and things.
n0ise
Profile Joined April 2010
3452 Posts
August 30 2011 17:47 GMT
#6
+1 Hit from BF hellions and from banshees to kill a marine. both quite common

also, it's faster
jlai
Profile Joined February 2011
Hong Kong63 Posts
August 30 2011 17:55 GMT
#7
Thanks for all the replies. It seems that combat shield first has a lot of advantages over getting stim first. Does it mean that i should always get combat shield before stim in TVT? Is there any case i should get stim first? many thx.
Squigly
Profile Joined February 2011
United Kingdom629 Posts
August 30 2011 18:00 GMT
#8
On August 31 2011 02:45 Nibbler89 wrote:
If you stim without combat shield you get 1 shot by siege tank. Also combat shield marines without stim beat marines with stim but no combat shield.

It's not always better to choose one over the other depends what you want to do. But those are some facts that can affect the choice,


I doubt this, id bet stim>shield in a fight. Source?
Nexic
Profile Blog Joined May 2010
United States729 Posts
Last Edited: 2011-08-30 18:03:32
August 30 2011 18:00 GMT
#9
It is for a 1 rax FE into 3+ rax to help defend banshee/hellions (one additional hit), as a few have said. Some of the other stuff here is just wrong.
nrv
Profile Joined April 2011
United States113 Posts
Last Edited: 2011-08-30 18:05:41
August 30 2011 18:01 GMT
#10
It's pretty much just to be defensive, as far as I know.
yes
Antisocialmunky
Profile Blog Joined March 2010
United States5912 Posts
August 30 2011 18:04 GMT
#11
It comes early and is potentially a few hundred extra HP you have.
[゚n゚] SSSSssssssSSsss ¯\_(ツ)_/¯
Marine/Raven Guide:http://www.teamliquid.net/forum/viewmessage.php?topic_id=163605
Cycle
Profile Blog Joined March 2011
United States300 Posts
August 30 2011 18:05 GMT
#12
I've also seen MMA get Combat Shield before Stim a few times in TvZ, and he did a push with it, so I don't know if it's always just defensive. Does anyone know about timings involving that?
| chKCycle.551 | NA | Master League Random | Checkmate Gaming |
lorkac
Profile Blog Joined December 2010
United States2297 Posts
August 30 2011 18:05 GMT
#13
Shorter upgrade time. Easier for timing pushes.
By the truth we are undone. Life is a dream. Tis waking that kills us. He who robs us of our dreams robs us of our life --Orlando: A Biography
rauk
Profile Blog Joined February 2009
United States2228 Posts
August 30 2011 18:08 GMT
#14
On August 31 2011 03:00 Squigly wrote:
Show nested quote +
On August 31 2011 02:45 Nibbler89 wrote:
If you stim without combat shield you get 1 shot by siege tank. Also combat shield marines without stim beat marines with stim but no combat shield.

It's not always better to choose one over the other depends what you want to do. But those are some facts that can affect the choice,


I doubt this, id bet stim>shield in a fight. Source?

Liquipedia says 10.5 dps for stim, 7 for nonstim. Simple math tells you that combat shields wins in this case. Plus shields is faster to research.
Nexic
Profile Blog Joined May 2010
United States729 Posts
August 30 2011 18:14 GMT
#15
On August 31 2011 03:05 Cycle wrote:
I've also seen MMA get Combat Shield before Stim a few times in TvZ, and he did a push with it, so I don't know if it's always just defensive. Does anyone know about timings involving that?
You can do a blueflame + shields timing or maybbbe super fast tank + shield marines push, but normally you want stim first.
LionsFist
Profile Joined April 2010
Australia164 Posts
August 30 2011 18:17 GMT
#16
On August 31 2011 03:08 rauk wrote:
Show nested quote +
On August 31 2011 03:00 Squigly wrote:
On August 31 2011 02:45 Nibbler89 wrote:
If you stim without combat shield you get 1 shot by siege tank. Also combat shield marines without stim beat marines with stim but no combat shield.

It's not always better to choose one over the other depends what you want to do. But those are some facts that can affect the choice,


I doubt this, id bet stim>shield in a fight. Source?

Liquipedia says 10.5 dps for stim, 7 for nonstim. Simple math tells you that combat shields wins in this case. Plus shields is faster to research.


Simple math? I would have thought it'd be rather complex given that the DPS of the army slowly drops as the more units die...

For those who haven't worked it out, 10.5 dps to a 55 health unit = 19% max health per second, 7 dps to 35 health unit = 20% max health per second.

The problem arises when the stim marines get off the first shot because they're stimmed. Not to mention that the stim marines always have the choice of when to engage or back out, while the normal marines can't afford that luxury. They're almost guaranteed to get a better concave too...

That said, the benefits of the extra hit from banshees/BFH definately make it better TvT choice. The straight up combat aspects though of marine v marine isn't so clearcut.
Saishuuheiki
Profile Joined November 2010
United States188 Posts
August 30 2011 18:20 GMT
#17
Consider the math: Assume normal marines shoot once per second. Marine gives +50% firing rate, so that means stimmed you fire once per 0.66 sec, or 3 every 2 seconds. (While I realize that the firing rate for a marine is less than 1 second, that is unimportant as we're only comparing marine vs marine.)

After a stim, a marine has 35 hit points. At 6 damage per shot it takes 6 shots to kill, or 6 seconds for an unstimmed marine.

With a combat shield, at 55 hit points a marine takes 9 shots to kill. Which, conveniently, takes 6 seconds.

The simple math indicates that it's a tie if 1 marine with a combat shield fights 1 stimmed marine without shield.

Thus, it is safe to say in a pure marine v marine fight, combat shield is probably better. This is due to the fact that stim does wear out eventually, and even with stim, it merely brings the fight to equal ground.

Note that if you're playing aggressive and trying to break your opponents defence with marines, stim may be better. Outside factors such as moving up a ramp or fighting against a bunker may favor stimpack over combat shield. Plus, if you start stimpack first and start combat shield before stim is done, you will have both available before you would otherwise. This can lead to certain timings favoring stim first.
Corvi
Profile Blog Joined July 2008
Germany1406 Posts
August 30 2011 18:25 GMT
#18
shield marines win easily against stim (no shield) marines in lower numbers (<15 or so).
goiflin
Profile Blog Joined November 2010
Canada1218 Posts
August 30 2011 18:46 GMT
#19
Basically you can sum it up to this; early game, shields are more important, since engagements of marine vs marine are in low numbers, sans medivacs and upgrades. Stim is more important once ups and medivacs are in play, and you and your opponent have more marines.
Alsn
Profile Joined February 2008
Sweden995 Posts
Last Edited: 2011-08-30 18:53:47
August 30 2011 18:53 GMT
#20
On August 31 2011 03:17 LionsFist wrote:
The problem arises when the stim marines get off the first shot because they're stimmed. Not to mention that the stim marines always have the choice of when to engage or back out, while the normal marines can't afford that luxury. They're almost guaranteed to get a better concave too...
Stim doesn't fire the first attack any faster than non-stim. You can't go faster than instant.

Also, your argument about stimmed marines being able to choose when to engage or disengage is a bit flawed imho. They can indeed choose when to engage, but to use stim to run away at the stage in the game where you only have 1 upgrade instead of 2? Stimming in such a situation is likely to hurt more than help since you do not have medivacs.

Not to mention all the other things mentioned in the thread so far, banshees/hellions requiring an extra hit, tanks oneshotting stimmed no-shield marines, etc.
Machina improba! Vel mihi ede potum vel mihi redde nummos meos!
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