Revan's Sith Empire vs Vitiate's Empire
Let's pretend the dark side ending is 'canon.' Revan kills Malak, keeps the Star Forge and conquers the Republic. Revan still does not remember the Sith Emperor but he does plan for an external threat after the Republic is his.
The Sith Emperor after hearing news of the Republic's demise leaves Dromund Kaas but is attacked by Revan thus starting a Sith Civil War.
Revan has access too...
-The Star Forge
-Dark side Bastila
-The Sith Triumvirate
-Canderous and the last remnants of the Mandalorians
Vitiate has everything he had when he attacks the Republic canonically. Which Sith Empire would conquer?