I'd be interested to see winrates vs T once there are large numbers of widow mines out. Watching GM streams, it feels like the rate is around 10%, and the mines are allowing (relatively) mediocre players to beat Top8 Zergs nearly every time.....
I thought the answer would be of interest to you all.
GGTracker has 961 Masters TvZ HotS 1v1 Ladder replays.
In 616 of those, the Terran produces 10 or fewer widow mines, and wins 49% of the time. In the other 345 games, the Terran produces more than 10 widow mines, and wins 59% of the time.
Of course this doesn't exactly prove that Widow Mines are OP, but at the very least it suggests that getting/preventing mass widow mines is an important part of TvZ.
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Interesting findings from the above stats:
- mass widow mines is much more prevalent in TvZ than in TvT or TvP
- in TvZ, mass widow mine usage increases with league
Here are Masters 1v1 TvZ games
And here are Masters 1v1 Ladder TvZs with at least 10 widow mines at 15 minutes
Here are winrates for Master 1v1 Ladder TvZ, grouped by what % of the Terran's Active Army resources were devoted to Widow Mines at 15:00.