"Spike is a excellent H2H fighter hes better without guns. "
I know he is good, but he usually puts guys down quickly with quick flashy moves, usually ending in a chop or kick. Except in Cowboy Bebop the movie. He was so badass in that. But I think MK can just take more damage (almost an inhuman amount). Also MK would do almost anything to win. In a serious fight, I think MK would outlast Spike. Than after Spike eventually tires he would take him down.