Scenario 2 only b/c TPM Mace and Dooku are too speculative
1. Hand-to-Hand. Anakin simply because of age advantage giving him the edge over whatever small force augmentation/endurance power Mace might possess. His cybernetic hand is an underrated plus here as well. Dooku is out of the running for this round. A younger Mace might be able to take this though.
2. Sabers. With morals on, Anakin and Mace are going to hammer on Dooku first while exchanging their own blows. This then comes down to Anakin vs Mace, which in pure sabers could go either way IMO. I believe it comes down to who will tire first as both utilize extremely demanding light-saber forms. Mace might have greater skill over Anakin, but not endurance. If Mace doesn't find an opening within the first few moments of the fight, he goes down due to fatigue.
3. Force. This one is pretty clear cut. Anakin is out of the running here due to lack of force skill. We never see him demonstrate a skill capable of contending with Dooku or Mace outside of basic telekinesis techniques. Mace and Dooku is closer, but Tyranus can draw from both his knowledge of the dark and light side whereas Windu only has the light. Both are close in terms of force potential, but Dooku is more skilled.
4. All-Out.
With morals on, Windu and Anakin hammer Dooku. There is a chance that Tyranus might be able to blast Anakin temporarily into submission, but since Mace is already a challenge by himself, it's only a matter of time until Dooku tires and goes down. As for Mace vs Anakin, ditto what I said for the sabers round except for the fact that Windu has Anakin outclassed here with the force. Again, it's close, but I'm giving Windu the slightest advantage due to superior force skill. Could still go either way.
Round 5: All-out with amps. This is the toughest round to come up with verdict for. With morals off, Anakin is probably going to be the biggest aggressor, followed by Mace, and Dooku with a defensive approach. Zonakin and Sidious amp Mace are too close for me to really choose. Either way, if Dooku plays defensive, he can wait for the other two to tire and become sloppy with their technique in which case Makashi takes advantage of a wild strike and someone loses a limb.
In summary:
H2H: Anakin decisively
Sabers: Either way between Mace & Anakin with slight leanings towards the latter
Force: Dooku decisively
All-Out: Either way between Mace & Anakin with slight leanings towards Mace
All-Out, morals off, amped: Either way between Mace & Anakin and Dooku kills the victor.