Each at their respective peaks (Dooku as of RotS/Dark Rendezvous) and Malgus as of TOR; Sidious as of Dark Empire and Vitiate as of TOR.
The setting is a Dark Side nexus, meaning everyone will have an amp or cannot be prohibited X feat because nexus logic. No PIS, as is the norm. The battlezone is the foyer of the Korriban Sith Academy in TOR, with the wizard archetypes having the high ground on the second floor level.
Round 1: All verified feats apply.
Round 2: Sidious cannot use Dark Storm and Vitiate cannot mindrape.
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Registered: Mar 2014
Location: The Misty Mountains
here is your evidence. Sidious is the most powerful sith in the mythos, he can do stuff leagues beyond what either Malgus or Dooku can accomplish, there is no contest. Sidious/ Vitiate win
So it's them at their best regardless if it was due to a nexus?
Then that is unfair. Over a ton of machinery disintegrated upon impact with Palpatine's body--and that was a dying Palpatine. So if we include all of their performance regardless of a nexus, then even a dying Palpatine is nearly indestructible. What exactly could either of them do to Palpatine? Their force attacks would probably tickle him at most.
Also, if you're excluding Vitiate's telepathy, then it would only be fair to exclude Palpatine's, as he's very much comparable to Vitiate in that area (if not, greater), such as mentally dominating the minds of a population that reached nearly 20 billion, mind wiping millions, telepathically controlling surviving jedi and/or forcefully ripping info from their minds, and telepathically assaulting Vader from a distance of light years (similar to Vitiate's attack on scourge, but more impressive considering the distance).
I agree in that Vitiate is a non-factor. His combat feats aren't all that good, IMHO, or they don't match up to his hype at least. All it would take is for anyone of them to push through his lightning, and then he's screwed. I'm not sure about Dooku, but considering Malgus' strength feats, he should be able to handle Vitiate's lightning with his saber.
__________________ "The power of the dark side is an illness no true Sith would wish to be cured of" -Darth Plagueis