This is a total pet peeve of mine also—little women kicking big men’s asses, then they wonder what’s going on in our society: men from little boys being bred on violent video games where women and men are “equal” fighting partners. Yeah right.
The reason WHY "men should never hit women" had been part of our culture was because it was a given that women were weaker and unable to defend themselves effectively against the average man.
Make boys think that women are physically equal, and they will treat women the same way they treat fellow guys. And often, guys treat guys rather roughly.