Wait, I’m not breaking some sort of Universe cross-over issue, am I? Well, you see, some people might consider this to be a matter of opinion. But…
Darth would win as long as he could keep the Hulk levitated. Then no matter how strong the Hulk is, he can get no traction, can’t move, can’t win. Would that be considered cheating?
I’ve heard some talk about the Hulk being able to control his body density. If he could make himself heavy enough, maybe Vader wouldn’t have the energy to lift him.
After taking all of this into long consideration.
Give it up for Darth.