Martial arts styles are not as important as the stylist. NHB is not really NHB. Your two bro's can't jump in the ring and help you. The guy you are wrestling can't knife you while you are fighting. Self defense, and sport fighting are two different things.
http://www.rmcat.com
Adrenal dump training. When you train in a dojo, those guys are usually your buds. Fighting someone that wants to kill you takes away a lot of your fine motor skills. Sport/Self Defense - two different things.