Kang still has the armor in melee though. Can he still use weapons in melee? He could teleport behind Kingpin and fingerblast him into oblivion while touching him.
However, if he cannot use his weapons and he just has his armor without his sword/knives... I think Kang actually doesn't have strength showings to compete. The armor is listed to give him 15 tons of strength but that's about it. I wouldn't be surprised if Iron Lad's armor had the better showings.
Kang still flies though, he bullrushes Kingpin at high speed and kills him by dropping him from huge heigths. Kang wins 10 out of 10.