I agree with metamorph. Helio Gracie changed the whole style of BJJ and introduced leverage. Being only 145 lbs Helio was submitting opponents who were more that twice his weight. It doesn't matter how big you are. An arm bar is still an arm bar. A choke is still a choke. Besides, it can take 10 years to reach Black Belt in BJJ or even longer. I've been training Muay Thai, Filipino Martial Arts, Jeet Kune Do, Wrestling and BJJ and my favorite by far is BJJ. In my opinion it's the most effective and practical martial art around. If you can knock someone out with a Karate kick of punch more power to you but 85% of all fights end up on the ground. No one can knock BJJ if they have never trained in it. Peace!! FightClub.com