As someone who taught women's self defense courses for years (and am an accomplished martial artist in my own right), I think the willingness to use force--and the expectation that others are willing to use force--is far more important than the effectiveness or quantity of that force.

I don't mean that skilled martial artists can defend themselves against unskilled but much stronger attackers; people usually assume this, and I agree. What I mean is that after spending a weekend teaching a woman to fight back against a physical assault she knows almost nothing more than she did before, but has the confidence in herself to use force, and that willingness makes all the difference.

Men are statistically more willing to use force to get what they want, and being aware of that, women are forced to be more cautious. I feel like this ought to be more relevant than men being more prone to organizing for violence, especially in the current day western world.