I dunno man... Bruce Lee was in street fights in Hong Kong when he was 16 kicking the shit out of people.
Had you said anyone else, I'd maybe agree, but Bruce Lee was the real deal long before he was a movie star.
Kids....

There are lots of legends and unverifiable hearsay talked about in martial arts-just like in bodybuilding.There is a word for it:
Bullshit. If people believe there is a buck to be made in embellishing the truth they will do that.
Besides even you beating up a bunch of nobodies in the street wouldn't make you a world class fighter.A case in point :Kimbo Slice.
That video of Bruce is the Martial Arts equivalent of pro wrestling.The guy getting punched isn't in a balanced stance(check out the stances of any professional fighter) and is liable to to be knocked on his arse with even a small shove.