Let's also remind ourselves that Dooku couldn't even fight evenly with Yoda on a darkside nexus (one that was explicitly stated to have made him far more powerful), as I just stated he got dominated by Talzin's sorcery, and seemed to get dominated by Sidious regularly. Ulic on the other hand, was able to fight evenly in a fight that would have lasted hours with a lightsaber prodigy that possessed the ingenuity to later on create his own lightsaber form, and who was capable of such feats as draining the entire Massassi race and freezing the senate, and also possessive of perhaps the single most destructive short range Force attack we've ever come across.
Ulic >>> Dooku