Discrepency
I know that chances are this has already been discussed, but in case it hasn't I'll go ahead and ask it: In the movie Anakin says that he is already powerful enough to overthrow Palpatine when he is talking to Padme on Muustafar, also in the RotS book Mace says that Skywalker is arguably the most powerful jedi alive, before he even turns evil. So that must mean that at some point before the duel Anakin was in fact streonger than Yoda and Palpatine... Right?