Actually, for those misinformed, Bruce actually had to defend himself on occasion (sometimes on the set from extra with big egos and bigger mouths) and won by all accounts, quite handily. His theory of Jeet Kun Do was designed with practical applications in the real world combat...it could be the grandfather theory of what is known as mixed martial arts. It included elements from many different styles (boxing, jun fang boxing, wing chun muy thai, jujitsu, judo among others.He studied the Inosanto derivative of filipino Kali(much of the close quarter/improvosational weapons and multi-range fights used in movies like the bourne identity) with dan inosanto, a legend.

You can see some Kali in Manny's style, through his use of ranges. While most combat styles (including boxing) have threories and principles on ranges, you can also see it in Manny use of attack angles. All in fun and theoretically speaking, he still isn't within reach of Bruce as a well rounded fighter and would lose this karoake death match as Bruce would use kicks to check Manny's legs and control the distance. In the event that Manny did get inside, he would have hard time getting off punches as the trapping and locking would tie up his hands. Bruce was more explosive from a shorter range also. In the area of haircuts though, its a toss up.

P.S. - That chinese lady throws more rabbit punches than Andre Ward.