I agree again.
And when I wrote "when a man hits you" I wasn't talking about genders but really about something much stronger than you who hits you. And, of course, not all the men are strong. There are men thinner and weaker than a woman and, in that case, the woman has a fighting chance. But let's consider a man like Ted and a girl like Buffy in the real world: without supernatural powers Buffy is a skinny and petite girl. What's her fighting chance against a man like Ted in a case of physical attack? Realistically he would win against her and that's it.
Of course there are many ways to abuse somebody. Sometimes isn't about brute force at all - see the Willow and Tara's situation - and those are the times in which men and women are really on the same ground because a woman can be psychologically abusive as much as a man. But again different circumstances and different type of victims.