It's the X chromozone versus the Y. There's over twice the genes on the X and so the X wins. The result? The male bell curve on intelligence, violence and a host of other things tapers much further to the extremes. There are probably fewer potential female Hitlers, Einsteins, Stalins, Gandhis or Newtons. Yes men are more violent generally, but not usually pathologically. The overlap of male and female bell curves tends to be greater than the differences.
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.