Lazer that is a very good theory, but then there is no reason as to why Anaken beat Dooku in ROTS because he unleashed his anger. It could have been the excaption who knows. Now for the fact of Mace bringing three other jedi is because his orginal plan was to arrest someone. Think about it a cop is not going to go alone to arrest a dangerous criminal. So he brought more jedi thinking that Palpatine would peacefully turn himself over. Not the case now it isn't till after he kills the other jedi he wants to kill Palpatine.
For the Yoda battle scene please refer to my above statement because i do feel it can be argued a draw, but there is evidence that supports Yoda being stronger. Not for Palpatine being stronger though. I still state that only the actual fight and not the otcome or the previous scenes can be included.