Yea but i also see Anakin as being more compassionate that Dooku, even as a Jedi. And maybe Yoda would of had certain connection with Anakin, knowing all the personal struggles and other crap that he had to go through. I dont know, it was just an idea. But i still think Vader would beat him. But you also have to admit, that if Vader would concede to Yoda, Yoda would take pity on him, or be more apt to help him , rather than just "strike down a sith" ya know what i mean?