Having said all that, one-on-one how will Darth Vader defeat Voldemort?
(1) I've heard the force choke arguement. What people don't seem to understand is that Voldemort can--and does--issue spells (including the one-hit killing curse) non-verbally, so a force choke wouldn't stop him long enough to prevent him from sending a one-hit killing curse at Vader. Also, Voldemort is not someone who could simply be force choked with ease.
(2) I've heard that Vader will slice him in half with his lightsaber, end of story. No. Both Voldemort and Vader are capable of disarming their opponent. For example, Vader can use the force to take away Voldemort's wand...but Voldemort doesn't need his wand to summon Vader's lightsaber away from him.
(3) I've heard Vader can use Force Lighting to win. This is certainly a viable option, but is Vader's lightning really that powerful like Sideous's or Yoda's? Why then didn't Vader (unless I've forgotten a part, and tell me if I did) use force lightning in the movies? In any case, Voldemort can Apparate and Disapparate in an instant...otherwise he'd have been finished at the end of Book 5. I just don't see how force lightning could land a single blow against him considering he can vanish and reappear wherever he wants in an instant. Another counter to this argument here is that Voldemort has used magic to instantaneously conjur a magic shield out of thin air to block an extremely powerful spell--and he did it with ease.
All I'm looking for is for a true SW fan who has also read the HP books to convince me that Vader would win. But I honestly haven't seen anything in the CANON movies that lead me to believe that Voldemort couldn't beat him.