Yes,but its all about technique. I've used it in a street fight,the kid was an inch shorter but was heavier and STRONGER, by allot. He threw me, and before he had the chance to start drilling my face I broke him down I felt his arms shake because he was pushing so hard to get up,so I let go and followed up with a pendulum sweep,achieved mount and held that Ezekiel choke for a bit until he stopped throwing those annoying rabbit punches to the top of my head (He blacked out) . The point of the guard is to give the smaller guy whos losing the fight a chance! and if he knows what hes doing he will do exactly that.