1. Anakin and Mace. Anakin has betetr saber skills than Dooku, that's why he ebat him in ROTS, and Dooku got tired. Mace's saber skills are at least even with Palpatine's.
2. Palpatine and Dooku by far. Palpatine's Force skills beat any one's from the movies except maybe Yoda's. Mace is a few notches below him and even Dooku is a notch above Mace. ROTS Anakin is, at best, even with Mace in Force powers.
3. Anything goes? Hmm... then Palpatine beats Mace while Dooku and Anakin duel. Eitehr Dooku whips out some Force powers and takes out Anakin or Anakin outduels him, kills him and then gets beaten by Sidious. So either way Sidious and Dooku win this one.
1. Dooku and Sidious, Dooku will surely want to duel with Mace Windu. The fight will last for an eternity with no real winner probably. Palpatine however will take out Anakin pretty fast, and then go and help Dooku beat Mace.
2. Palpatine and Dooku, they use the Dark Side. Dark Siders are always better in using the force for offensive moves then lightsiders and neither Mace nor Anakin has shown the ability to block lightning with the force, they will be fried pretty fast.
3. Again Dooku and Palps, they are better with a lightsaber and with the force.
Anakin is greater than Kenobi. Heck, even in his blind, grief-overwhelmed state, he still manages to stalemate Kenobi in a force fight and keep him on the defensive the whole time on Mustafar. He even lands a couple kicks in.
That seems like the logical conclusion, given Dooku's background (power), but George Lucas said that Episode 3 we'll see Vader in his prime... Beating a jobbing old man and being sliced up by Obi-Luck Kenobi doesn't really show him in all his glory. I think the scene might have been there to show how powerful Anakin had become. But that makes no sense either, considering Obi-Wan was bantha fodder to Dooku.
1st Round : Lightsabers
Anakin and Mace win. Mace defeated Sidious with only a lightsaber and Anakin defeated Dooku with just a lightsaber
2nd Round : Force only
Sidious and Dooku. Sidious was clearly faking his defeat by saying he was too weak and then explodes with this huge amount of energy and Dooku is clearly stronger in the force then Anakin considering he tossed Obi-Wan around like a doll and Obi-Wan was one of the best PT Jedi.
3rd Round : All powers.
Sidious and Dooku. They use the force to overwhelm Mace and Anakin during lightsaber combat.