Actually that could be argued to the negative.
Seems the few times women were in power, they were unbelievably successful.
Meanwhile, the last 30 years of British PM - all men between Maggie and May (lol) - has been dismal.
Not a very good record to use, either way.
You’ve mentioned a few outliers on the female side, and I’m sure there are many more oh, but that’s what they are outliers.
The historical record is pretty hard to argue with.