A question about abusive relationships?

There are a lot of abusive men, but there are a LOT of abusive women also. Most girls get away with it, because they like fragile. Like "oh how could little ol' Janey hurt big ol' bobby?" But it's a crock. Any ways, my man was in an abusive relationship too, but it was the other way around. his ex used to punch him in the face, and beat on him when she'd get angry. One day, she attacked him, he held her down to stop the fighting, she calls the cops on him for "hurting" her, and he goes to jail. He seemed like the one in the wrong because she's only 5'5 and he's 6'1. Now he's labeled as an abuser, even though she's the crazy abusive one....Girls do it too, they just get away with it more!