Mutants win. Only chance Team MCU would have IMO is Time Stone hax, but we've seen that Strange needs a few moments to use it, and can be pinned down before he does. And all 3 members of Team Mutant are powerful telekinetics, among other things. And that's assuming David or Amahl don't just disintegrate him, freeze him in place, or go full mind-rape the moment the fight starts, which is a serious possibility given the match stips.