I wanted this to be extremely close. In all three rounds, I think, it would be close.
For round one -
Palpatine vs. Yoda:
The duel in the Senate proved that these two are equals or near equals to each other in the Force. Each attack they made was answered by a counter-attack. This would be extremely close, and I could see several instances where Palpatine could best little Yoda (hell, he's even nailed Yoda with lightning a few times), but in my opinion - Yoda would emerge the victor simply because of his smaller size. As with the whole pod scene, Palpatine had one hell of a time hitting Yoda. But, still, it is extremely close and I think Yoda would be walking out of it pretty tired and bruised.
Victor: Yoda.
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Mace Windu vs. Count Dooku:
After reviewing Faunus's accounts of Shatterpoint, I think that this fight would be almost as close as the one between Palpatine and Yoda. In my opinion, in sheer general Force powers, Mace is easily Dooku's equal or possible superior. In Shatterpoint, we see him controlling an entire massive avalanche. And, in AotC - we see Dooku slightly struggling to rip a big pipe from the ceiling of his hangar. However, Dooku has the advantage of utilizing offensive Force powers which we have not seen Mace to be able to handle. That alone would possibly be sufficient enough for Count Dooku.
Victor: Dooku.