i hate questions like these, no offense, because everyone is always questioning girls, no one ever questions guys in martial arts. the 2 highest belts at my school are girls. and my instructor is a girl too. it depends on the girl and the guy. everyone is different. one girl might be better at forms and a guy might be better at self defense, or something. it totally depends on the people. i will go against any guy to try and prove my point!