There is a huge difference between limitations and traits so bad it is impossible to overcome.

Drew Brees is short. That is a limitation. He has obviously been able to overcome that limitation. Dan Marino was possibly the slowest person to ever play professional football. He was obviously able to overcome that limitation. Joe Montana had an average arm at best. He was obviously able to overcome that limitation. Ty Detmer was one of the most celebrated college QBs ever, Heisman winner, top 5 alltime yards passing, etc... but he was short, not a great arm, couldnt read defenses, etc... he was obviously never able to overcome his limitations.

I'm a fan of Grier and would like us to draft him. But the guy clearly has limitations. He doesnt have a huge arm. He doesnt have the elite physical size. He doesnt have great athleticism moving outside the pocket. He does fall back on his throws at times. All of those things can be limitations. If he had all of the ideal traits, he would be talked about as the #1 overall draft pick. Not a borderline first rounder. But just because he has limitations doesnt mean he can't overcome them by having great accuracy, great anticipation, an uncanny ability to read defenses, great pocket awareness, etc, etc...

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