I mean I think Bruce would win because his aim was to kill is street fights if he got into one, so his fighting would be based on that, except even though he trained his ground game it wouldn't be as good
we would never know. MMA is a lot different from simple kung fu. kung fu wont work in mma. even the arts that you see used in mma like jiu jitsu muay thai boxing and wrestling are slightly changed for an MMA style. if bruce had an opportunity to train specifically mma i think he would do extremely well he was fast and had an amazing physique
most people think bruce lee invented mma and ufc. so he would so kick them up down, sideways,and every other direction it would not be funny. bruce lee was not about killing. he was actually quite moral. his ground game, as well as his other techniques worked. before he crossed trained. he learned the traditional martial arts. perhaps you should take that to heart. you never know where or what form of attack can come at you. and if you also know that style you are better off.
I don't think Bruce Lee would do so well against current elite MMA fighers as most would like to think. The sport of MMA has involved greatly and if you've been following it lately you would notice many great MMA veterans have been outclass by new up-comers. I personally think Bruce Lee's methods would of worked in street fights but in MMA match would most likely fall short. I'm assuming his ground game isn't up to par as-well, he would get taken down and submitted by a BJJ expert. He's a great figher and a legend but those are my two cents.
Bruce Lee was a martial arts actor. Movies made him look very good. He was an outstanding instructor and innovator. But was he a great fighter? Probably not. Under UFC rules he would have lost to all the the fighters on you list because he was not trained as they are. I'm not taking anything away from Lee it's just the way it is.
I think he would do well unless a fighter took him down, I doubt he could handle submissions very well... But that's just my opinion...
