I haven't had much trouble pitching the ball on the 3O. You just have to anticipate what the defender is going to do. There are some times when I can't get the pitch off when I thought I should have, and a few times when the RB stops on a bad pitch and basically gives the defense the ball, but not as bad as you suggest.
If anything, its unrealistic when the defense picks the RB, b/c if you can hold the ball long enough, the pitch defender gets beat and the rest of the defense crashes, and you just get huge gains all day.
With my GT dynasty I've been top 10 rushing every year using mostly option plays for my ground game.