R1) Sabers only

R2) Force only

R3) Everything goes

Dooku wins sabers.

Everything else Plagueis.

-1 Dooku

-2 Plagueis

-3 Plagueis, slightly.

Round 1- Dooku

Round 2- Plagueis

Round 3- Plagueis

You know how Dooku would never beat Sidious in either a lightsaber duel or Force battle? And the reason for one is identical to the reason for the other?

Yeah, that same reason applies to Plagueis. He wins every single round.

The red-lightsaber wielders list would be ;

2-) Sidious

3-) Plagueis

4-) Maul

5-) Dookie

And Plagueis lol-stomps Dooku in the Force, even worse than Sidious did.

R1) Sabers only

Plagueis. While it is possible Dooku is more sophisticated in technical skill Plagueis's superior Force connection trumps them. I doubt there's much of a gap in any case. If Dooku ever got the upper hand Plagueis would just fall back to that same state he took when he trounced Venamis.

R2) Force only

Plagueis. His lighting is more powerful than Dooku's.

R3) Everything goes

Plagueis. Physically superior, more powerful, more abilities, and at least comparable as a swordsman.

Plagueis 10-10