I'll give you the GG, cause his hands were mechanical and all, but that wasn't really a skill, but a 'mechanical ability'. Malak vs. Revan ... that's just no. Cause I kicked Malak under the table under two turns in every game.
Vader was a good fighter perhaps, but his kind of killer really didn't need the skill as much as his force... and force rage etc. dark force powers, and the mechanical enhancements, as in Vader would have died many time into wounds had he been just a dark force user and not had the armor to protect him from the saber hits.