I don't care about his personality. He has fewer comebacks because he plays so well early in games that he never needs to come back. Anyway, Rodgers leads in all of the most important categories: passer rating, adjusted yards per attempt, adjusted net yards per attempt, QB rating, TD percentage (as total proportion of his passes), the lowest INT percentage ... you get the picture. And he has the highest winning percentage (12-2) if that's something one wants to factor in.
As for comebacks, Roethlisberger leads the league with 6. But that's because he plays from behind a lot due to a lot of shaky early game performances.
One other thing about Rodgers: in the past four seasons, he has 132 TD passes and 15 picks. That is ridiculous.