On average we are.

Not including myself, raging testosterone fueled bitch that I am.

But when there is some kind of confrontation that could turn nasty in some way women are just less likely to deal with it head on. Hard to say whether it's down to innate difference or just because we learn in our teens it's just not a good idea to challenge men because of their violence. After all, one decent punch from a man can kill a woman.