bruce lee, and this comparison is poor, some of these guys are not even trained fighters, in a shopping mall jackie chan, in a wushu tournament jet li, in a kickboxing match tony jaa, in a robo dance, ahnie, in a shootout jason bourne.

Yes, I am a girl, and I'm going to take on this answer. Let's take this apart piece by piece. Jackie Chan - contrary to popular belief, NOT a fighter. Merely an incredible stuntman, choreographer, dancer, and singer. By his own admission, Jackie has only been in two fights, and he lost both. Jet Li - champion fighter Arnold Schwarzenegger - Mr. Olympia (strength doesn't have much to do with the outcome of a fight if you aren't trained or a fighter. Look at Bruce, he was tiny and able to defeat almost everyone he fought). -Jason Bourne - love him, but given that he's fictional, he's out of the equation. Same as Olyphant. So really, we're looking at a fight between Bruce Lee and Jet Li. Jet is a great fighter, and no doubt it would be an interesting match. Both are basically MMA fighters, having trained in a multitude of martial arts. Back in the day, Bruce was pretty undefeatable because of his exceptional skill and knowledge of the strengths and weaknesses of all the martial arts. He eliminated the weaknesses and put the strengths together to form his personal martial art, Jeet Kune Do. He was pretty unrivaled at that time because most people trained in one discipline, not mixed martial arts as he was doing. Therefore, he could figure out pretty quickly which style someone was fighting in and defeat him knowing the weaknesses of that style. Nowadays, he'd have a harder time, because generations have grown up with Jeet Kune Do and it gave birth to the modern MMA (mixed martial arts) movement. I'm not sure who would win, obviously people want to say Bruce Lee but nowadays, he would have more formidable opponents, Jet Li being among them. I'm not going to speculate who the winner would be, but I will say it would be a good match and not quickly over.

Bruce would whoop anyone's ass.