1. Vos bested Dooku, but Mace could contend for a long time against Sidious, even though it’s implied he threw the fight to wait for Anakin. I’d give it to Mace after a good fight
2. Dunno.
3. Does canon Mace have some impressive force feats? Tbh I don’t remember him doing much force-wise in canon. An enraged Vos dominated Ventress and he also lifted the Sleeper. This one may be close in canon tbh
4. I think Mace should win in a good fight. Mace>Vos>Maul imo
Mace was shown to be pretty powerful in the Force on Ryloth. Some massive objects he threw in the heat of battle. Didnt need to focus.
He also exploded 2 Destroyer Droids.
Plus theres deflecting Palpatines lightning. I dont think Palps held back on the initial shot. But even if he did I doubt any Jedi could do that.