Quote:
Originally Posted by goofyballer
Some random research after messing around with a library that parses SC2 replays:
This is based on 270 replays from GSL Season 3 last year, the WCS Finals, and GSL/SSL Season 1 of this year; each bar is a set of 30 games.
I'm mostly interested in comparing this against the replays that come out for season 2, following the swarm host nerf, both to see:
a.) how general game length changes in ZvT/ZvP
b.) if Zerg's lategame winrate drops even farther, and is perhaps made up for with an increase in early/midgame wins
Season 2 replays are out. I think I found a slightly better way to visualize the data, but it doesn't tell us much.
Here's the same graph above - 2014 S3, Blizzcon, and 2015 S1 - instead showing cumulative winrate as you add in games of increasing length:
The x-axis is the game length cutoff, and the y-axis is the Zerg winrate in games of that length or shorter. The sample gets larger as you go from left to right, so changes become less drastic the farther out you go.
What this graph tells us: not a ton. Zerg is strong in the midgame, where there's a steady increase in winrate as you add in games from 14:45 up to 17:05, and then a steady decrease from 17:45 down to ~20:30, with no significant trends in the later stages of the game.
Here's that same graph, but for GSL/SSL season 2 after the swarm host patch (sample = 179 games):
Not a lot there, other than that
- Zerg's overall winrate drops from ~51.5% to ~47.4%
- Zerg is positive overall in games lasting under 18 minutes, at which point there's a pretty quick shift to being under 50% that the winrate doesn't recover from
Notable that in both graphs Zerg starts losing lots of games around the 18:00 mark. In a combined sample of ~450 games, that seems significant.