I've watched them both, and I'll tell you that Leinart's arm is stronger than Rodger's is. Neither of them have cannons. But Leinart has mastered something that Rodgers hasn't, and that's the touch pass. He does have nice touch. Rodgers doesn't. That doesnt mean Leinart can't put zip on the ball when he needs to. He can and does. It just means he doesn't throw it as hard as he can when he doesn't have to!
Reggie Bush is a rookie, and his running improper routes was one of the reasons that the USC/CAL game was so close. (His running proper routes was also the reason USC won the game, so you take the good with the bad).
Leinart "struggled" the first couple weeks of the season because his line had trouble protecting him because they were young, and his receivers were running the wrong routes and his running backs (White and Bush) couldn't figure out their blitz assignments.
Yet, despite all of that, Leinart has put up amazing statistics and has his team ranked #1.
The only knock anybody has on Leinart is "Not very athletic" Duh, he's a Prototypical Pocket Passer. He's not a statue and its not his job to run 70 yards for TDs. Those athletic comments are based upon this absurd idea that the McNabbs and Vicks of the world are somehow the next generation of NFL Qbs. They aren't. And won't be until somebody OTHER than pocket passers actually WIN SuperBowls! And then there's the "Product of the System" thing, which is just hysterical. Product of an NFL style system? Oh, the HORROR! If anybody should question "the system" it would be Rodgers and Tedford's ability to get QBs like Boller to play above their talent level and boost them in the NFL draft.