Anakin Skywalker ROTS (after turning to the darkside, but without suit) Vs. Yoda
How would the ROTS Yoda vs the ROTS pre-suit Vader (anakin after turning to the darkside, but before getting burned and put into the suit), duel, go? Let's use all of our EU extra knowledge about Anakin's force abilities and Yoda's force abilities, and figure this one out!
Like suppose Yoda went to go fight Anakin/Vader on Mustafar. LOLZ! Anyways, imagine anakin talking to padme and the yoda pops up!
Let's discuss how the yoda vs anakin fight would go!
It's only "moderate" difficulty if Yoda just goes blade for blade... As soon as he starts using force powers combined with the blade... it becomes EASY just as I stated.
Easy, easy, easy and more easy for yoda in this match up. Yoda was probably the strongest jedi ever until grandmaster Luke Skywalker showed up! He stalemated Darth Sidious in the late stages of his life. In Yoda's peak, he would tank anyone he came across. Yes anakin defeated dooku but dooku had to distract yoda and run during their duel!!! Yoda all the way!!!!
Lightsaber fight would be a close battle. If Yoda wins it will be with great difficulty.
But Yoda surpasses him by miles in the Force. Of course Skywalker has shown he can tank all Count Dooku's force attacks, so he's not taken down as easily as some might think.
But still in an All-Out Yoda wins with moderate difficulty.