DK and Bowser are both power types, but Bowser is significantly stronger than DK. DK makes up for this with the fact that he’s quicker than Bowser, but it’s just not going to be enough. Bowser’s transformation into Giga Bowser makes things interesting and gives him the edge that he needed. With Giga Bowser’s elemental attacks, DK just won’t be able to claim the win. Bowser wins.