In terms of sabers. It would be close since there is speculation about dooku and faders last duel.
Sabers: Vader. I love dooku but an angry anakin was able to defeat dooku however through finess rather than strength as dooku was able to sustain his assault and even smile at anakin. However this is a mentally balanced vader with way more experience and can employ each style to a high degree even makashi. While makashi is at its highest with dooku vader still has 6 other styles and more dueling experience to back himself up.
Telekenisis. It will be a marginal for whoever wins. But I'd say that in the force in general, I'd say dooku. He can match vaders magnitude and variety however vader isn't helpless. So with a slight advantage is give the force to dooku.
All out. Vader. His sabers advantage and greater strength and stamina will prevail. Also cook us slight power in the force won't be able to save him from vader as much as I hate saying that. Dooku might at the least be able to stagger vader however vader has his durability as well. So I give all out to,Vader.