ali vs bruce lee

if it was full contact like K1 or UFC then bruce lee hands down, unless ali had a secret martial arts history?

Bruce lee was trained from an early age in Wing Chun and went on to form his own martial art that took parts from boxing, fencing, wing chun, and other arts.
Yes he was a movie star and some of his work was whats called 'movie fu' but he was a tough cookie.

Ali... amazing in the boxing ring, thats it, he would have his ass handed on a plate in any other fighting scenario