I would suggest going and learning more about Vader, you have no idea what EU Vader was like, clearly.
Revan would probably win.
1. Force Lightning doesn't exactly play well with Vader's Suit.
2. Revan utilizes 2 sabers, while Vader has brute strength Revan has the speed advantage.
3. Revan took down the Star Forge defenses and then took down Bastila and Malek, I don't think Vader could have accomplished that.
4. Fact that Vader killed Younglings would probably annoy Revan, putting it mildly.
It would be a close match, but Revan probably has the advantage.