Why girls win?

Dear God not this again....you can be strong, you can be endowed with sizeable muscles, but that is nothing. Speed + strength x surface area = damage. If you hit someone like...it might hurt...but if I hit you...it'll hurt. I know a place that hurts more than the balls or teh cliterus....Solar Plexis...one hit, and that's it, game over. Not only that, but every hold has a weakness....

Right below the center of the rib cage. One hit, and few people are getting up, even fewer if they want to live.