Is this is some kind of joke? Of course he would destroy them all. Next you are going to ask if Chuck Norris can win a fight?
What does win it all mean? Could he win a belt? Possible. He'd be a good striker and strikers always have the advantage of being able to win with a knockout blow. That said, MMA is about so much more than striking. Takedowns, submissions...I don't believe his martial arts style was geared toward that and this would be a major weakness for him.
JKD was all about mixed martial arts. I think he was an amazing athlete, so I think he would have definitely been a contender.
Without a doubt. If Bruce Lee had a couple months to train for a fight (even an mma fight) I can't see a way he'd lose.
Is this a joke? He would be dominated with wrestling/grappling unless he had years to learn how to sprawl and defend against submissions. Jose Aldo would take him down and choke him out fairly easily.
I don't think he's bulky enough for a ground fight, but he's definitely fast. If it came down to a striker match, he has a good chance. Throw in nunchucks, ala Thunderdome style, and it'd be all over.
I think he would need a lot of exposure to BJJ and grappling techniques before he could truly dominate. When I say a lot I mean, 3-4 years. People don't realize how strong he ended up being. He pushed his body to the limit and it ended up killing him. <iframe width="420" height="315" src="http://www.youtube.com/embed/u4ekAQfN8x8" frameborder="0" allowfullscreen></iframe> I think his style would end up being very good on his feet in a cage. Combine that with a mastered ground game, he would dominate. Too fast, too strong, too smart and too skilled. Bas Rutten(who knows more than all of us combined about fighting) thinks he'd be decent/good with training: <iframe width="560" height="315" src="http://www.youtube.com/embed/TWZBSBab-Es" frameborder="0" allowfullscreen></iframe>
Bruce Lee was a fighter that happened to be in movies. Jackie Chan is an actor that knows how to fight.
Bulk has little to do with how you do on the ground. Fat guys like Jeff Monson are amazing and skinny guys like Demian Maia are amazing. And with wrestling, Jon Jones is one of MMA's best and he is 6'4" with chicken legs. That photo of Bruce Lee reminds me of Phil Davis. Freak physiques on those dudes.