R truth is probably the greatest comedic wrestler the WWE has ever had.
He has constantly kept himself fresh and reinserted himself into tv time, every time he became irrelevant.
But I doubt he would ever be a main event guy.
I will say this though. The guy is really under appreciated. He can be both funny and serious. His heel turn on John Morrisson should be in the top 5 heel turns. His acting and timing was top notch, especially his "Why did you make me do this!" Look.