Okay. Two points of view here.
If we're voting for OUR Mai, then of cource, she'll destroy Chuck before he gets a chance to realise he's been beaten to a pulp.
... but... Chuck Norris is so tough that he has a thrid fist to punch people with disguised behind his beard!!!
but... since he was taken out in the ULTIMATE SHOWDOWN, by Gandalf the Grey and Gandalf the White and "Monty Python and the Holy Grail"'s Black Knight and Benito Mussolini and The Blue Meanie and Cowboy Curtis and Jambi the Genie, Robocop, the Terminator, Captain Kirk, and Darth Vader, Lo Pan, Superman, every single Power Ranger, Bill S. Preston and Theodore Logan, Spock, The Rock, Doc Ock, and Hulk Hogan all at once.
Putting that irrelevant piece of info out of the way, our Mai will always kick Chuck flat out in a split second. lol