are you serious? bruce lee although trained in MA isnt the only fighter in the world who would have a shot at beating depowered Superman.
the list goes from guys who had no formal training to a random athlete Ma to professional fighters then combat vets..
superman in the real world depowered would have a serious problem fighting anyone with real combat skills who arent holding back not just bruce lee whom i like but i can differentiate between the myth and the man.
superman's height and weight can only get him so far in a fight and to say he can beat an aggressive fighter like military ops soldier if very disingenuous and it be the same for ppl who think bruce could do the same