Originally posted by The Merchant
Just by a bit. He did conquer Onderon and slayed many jedi, and if King Ommin was anything to go off by Nadd should have been beastly with Sith Magic. Nadd also learned from Sadow as well and destroyed him and took the title of Dark Lord after learning everything he could from him.
Hm, true, I forgot that Nadd killed Sadow. Though Sadow might've been slowing down by then or defeated by treachery rather than direct combat.