It's like when they say "Oh yes, Berbatov was the top scored in the league but he got all his goals against the bottom dwellers"... Not saying that about Tevez, but when you want to say the difference between them is goal ratio and that difference is only 0.02, then it's not much of a difference considering that a lot of Rooney's goals come in top level football like CL... and he's younger and improving his scoring ratio each passing season. So yeah, that 0.02 doesn't say much.
If Tevez was so strong mentally, he wouldn't be an outcast right now, would he? Look, Rooney is being important, winning things. Tevez is looking good, winning a few games here and there. There's a reason for that. Rooney has the tools to be and stay at a top club and be pivotal. Tevez is a little kid who is under achieving. His talent could take him to the best clubs to win shit, but now it looks like that won't happen.
And I don't like Rooney because I'm biased. If he comes Juve, I will probably adore him.