@ghostravage: Shiva is regarded as the deadliest assassin and arguably the most skilled martial artist (excluding Karate Kid) in the DCU. Batman has been quoted saying that Shiva "may well be the best fighter alive." She is able to anticipate the moves of other by reading their body language, which gives her a leg up on opponents. Every moves Lady Shiva makes is geared toward one thing only... To kill.
However, it is only my opinion that she would win.
@darkraiden Is anyone able to clarify whether or not Shang-Chi has powers? I have read that he has the power to manipulate chi. In one instance he used his chi to be able to detect a psychically hidden Jean Grey. Lets not forget that he has used his chi to deflect bullets.. Yet, he is still considered non-powered by a lot of people, including comicvine.
Maybe Sho Nuff should win this fight....