ROTS Vader or gimp-Vader? Or......Vader post-ROTS had he not been gimped?
ROTS Vader: Lose, still babykins here, though he did well against Kenobi.
Gimp-Vader: Lose (likely), he may have learned more of the Sith and dark side from Sidious after he was crippled, but still, he lost half his body.
Post-ROTS, no gimp Vader, able to realize his potential: The battle would be EPIC. Vader would win in the end, the whole chosen one you know...and he had a few more years to learn more of the dark side and the Sith.