Bruce was undoubtably a master of his craft. But so was Ali, and if they fought each other in their respective disciplines, I'd say they'd both end up 1 - 1
Anyone that says Bruce Lee would have a chance over Ali in a real fight is delusional. Ali has a hundred pounds on Bruce Lee. Boxing is an exceptionally good form of striking, that only lacks the use of kicks, knees, and elbows. Ali would easily knock out, if not kill Bruce Lee in a real fight.
Gloves - comatose.