Suggested by Destroyer Scorpion is an excellent hand to hand fighter and I dare say that his skill surpasses that of Kakuzu. If their stats were equal then this would be a straight win for Scorpion, alas they are not. Kakuzu is significantly faster and stronger than Scorpion and he also has a lot of special abilities at the ready which will make this even more of a blowout. Scorpion’s long reach will not be enough to bridge this gap. Kakuzu wins.