Bruce would beat Jackie within about 10 seconds
FWIW his disciple – Danny Inosanto would beat Chan as well
Bruce lee was the first essentially to start to mix the arts together – be like water, take that which is useful etc. Proficient in many styles from boxing to fencing to Filipino arts as well as Wing Chun
Calling a martial art ineffective is a sensitive topic as you’ll offend any practitioner of that style.
*
True MMA showed it was all a bit Paper scissor stone as one style beat another beat another – except for Brazilian Ju Jitsu – then again it is really rubbish against multiple assailants so it is not the best either IMHO.
* we all agree that Olympic Tae kwan do [ spell?] is crap, in a real world fight, though dont we