Talk about divergent opinions on a player, look at this write up on Robert Griffin (from link above):
Robert Griffin*, QB, Baylor: 6-2˝, 223. "He's phenomenal," one scout said. "He's going to need technique work and fundamentals. I have no problem about that. But you cannot lose the fact that he's got feet, touch downfield with accuracy, a strong arm. He's charismatic and smart as (expletive)." Played and started all four years, but had his '09 season cut short by a knee injury requiring reconstructive surgery. Finished with an NFL passer rating of 110.1. "He cannot play quarterback," another scout said. "He's just running around winging it. He has no idea how to play quarterback. He's got no vision. He's got no accuracy. No touch. Anything you look for in an NFL quarterback, he doesn't have it. You want him to run around and throw the ball and just keep running, he can do that. He's (Michael) Vick, but not as good a thrower."
From "phenomenal" to "cannot play quarterback". The truth is likely somewhere in between, though I think Griffin is a better passer than Vick coming out of college #faintpraise.