There are no weapons in mma. Mma is not a street fight or a video game like street fighter. It's a culmination of combining and refining martial arts which, admittedly, Bruce did before the UFC and it pissed off many traditional martial artist. But that's not what you asked. You asked who the father of mma was. I gave you the answer. Not discrediting Bruce in any way, I'm sure he influenced Rorion in some way as he has influenced most everybody in the modern martial arts world and plenty of people outside of it. But mma was born of the UFC and the UFC was born of Rorion working with promoters to show case jujitsu against other martial arts... There was a martial art vs martial art showcase in Japan months ahead and there have been many before that. I'm not even really a fan of the Gracie family and their arrogance, even though they developed an awesome fighting system that works quite well "in a real life fight incident." But if you really want to pinpoint the birth of mma, there really is no dispute. It all started with Rorion and UFC 1.