http://en.wikipedia.org/wiki/Freedon_Nadd
On second thought this might be a bit one sided...
Nadd would school Tyranus badly.
Don't get me wrong. Dooku is still my favourite Sith. But hey...Nadd killed a Jedi Master when he was a Jedi Padawan. Then he studied the ways of the Sith (from Sadow and the Lords on Korriban) and gathered tons of artifacts.
Then he went to Onderon, conquered the entire planet armed only with a blaster and a short lightsaber and nearly obliterated the beast masters with his Sith magic only.
Despite the fact that the Jedi send an entire army of force users to destroy him he still remained on Onderon as a spirit for 400 years (being able to kill a Sith magician when he was just a spirit) and manipulated Exar Kun later.
So well...Dooku will die pretty fast I think.
info on nadd is on www.lucasarts.com on the kotor 2 page under game info, chronicles. I think there is also something on him in tales of a jedi
Originally posted by Darth L. Dipsit
Nadd was one of my favorite Sith from way back. I think he could handle this, simply because of the fact that he proved himself a powerful fighter in his revolution and, though sometimes this sort of thing can count for nothing, he was trained by Naga Sadow.
zOMG.... Jawok?