It does happen, infrequently. She can't handle it. She then either gets beaten or, if she can, shoots the assailant. The in-between, which a man has, isn't there. A man, aside from being larger and heavier, is pound for pound far stronger, and built tougher.
Men fight better.
Any man who has playfully wrestled his girlfriend knows how easy she is to take down, because she doesn't know where her weight is, doesn't know where the trip will come from. I don't know. There are lots of female cops on the streets every night, and you never hear about them. No major problem. All rights reserved.