Since Anakin Skywalker is the same person as Darth Vader, he cannot literally fight himself, but I could argue that in the end, when Darth Vader rebels against Emperor Palpatine, that is a victory for the person he used to be, Anakin Skywalker. So Anakin wins.
No one. Vader would have to battle himself since Anakin turned into Darth Vader in Episode 3.
no one can clone a jedi
In my opinion, it would probably be Anakin Skywalker because Vader has mechanical limbs and it slows his movement down a bit.
Anakin, obviously, is more agile and athletic because he has all his body parts. Also, Darth Vader, since he has less organic limbs, has less midi-chlorians and less powerful Force-use. So Anakin would be my choice.
Darth Vader
If Darth Vader had the ring i would say that it would be sauron
At the end when Darth redeems himself and again becomes Anikan yes he loves his father but as Darth Hatred would be more correct. This may be a trick question for some but Luke did not like Darth Vader. He loved him in a hating way. Darth Vader is Anakin Skywalker, Luke Skywalkers dad, which means Luke would have to love his father. The answer is Luke loves Anakin Skywalker but hates Darth Vader. Hope that answered your question.
Darth Vader, he is talented with a lightsaber and has mastered the way of the force.
Darth Vader would win. He can use the force.
Darth Vader
Darth Vader, for sure. There's no denying the reality of the force. Vader doesn't use bullets... he gets into your mind.
Darth Vader is classic. He has a weapon that can cut through anything and the force. He would destroy Megatron.