Well... Vader has his suit so a killing curse wouldn't hit him
Vader would bring young potter to Palpatine to learn the ways of the dark side of the force
Potter without Heromine and Ginger wouldn't be able to figure out any puzzles or clues... and would flunk out of Sith U
Palpatine would then blow up the planet from the death star and move on
so Vader by default
Voldemort would be on the planet right?Voldermort isn't potter.