That kind of story is the exception. There's a reason we have a double standard when it comes to assault laws. Often times if a woman attacks a man first and he retaliates he might be charged with assault as opposed to self defense because of using excessive force, when really he was just reacting the way he would if he was being attacked by a man.
Because the law is based on equal retaliation, or enough to disable your opponent, punching a woman tends to do more damage to her, simply because of bone structure.
I'm with Christopher Hitchens when it comes to the rights of Women.
Ofcourse women should be treated as equals, and be paid the same, for doing the same work, and allowed to hold office, etc. But there are differences between men and women that cannot be overcome, and rather than struggling so hard against these difference that we can't change we should embrace them. I have no problem with a girl who wants to fight, she can fight all she wants. But I have it in me that it's my duty to protect my partner, Because thats what i'm good for. I'm not so effective at giving birth, or raising a child, there are shoes that I cannot fill. So I will fill the ones I can, and it is my hope that she will fill the ones that she can. We're different for a reason.