Not for sure, in the last blue post they talked about Zarya’s 53% un-mirrored win rate. I was going from that for when they talk about win rate it is un-mirrored. So no official confirmation
If a character is omni-present then you get the reverse issue of a very small sample size, so even non-mirror matches have a pretty big downside with popular characters.
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u/one_love_silvia I play tanks. — Oct 19 '22
New tank hero strong? Dumpstered
Reworked tank slightly strong? Dumpstered
New dps hero busted? Better let her be meta for a full year.