when it comes to drunken fights in bars it's mostly women in my experience. behind closed doors who the hell knows.
The other 50% considers both parties perpetrators since it's reciprocal. I'm talking specifically about the cases of one-sided abuse. Which kind of goes against your original point of:
When it comes to drunken fights at ratchet hip hop clubs it's a solid 90% women. Not that I would ever go to a ratchet hip hop club. But if I did, and there were a fight, by God it would be started by a female.