well, when you consider the rest of the list...
but seriously, of those guys, sam is the only one to play at a consistently high level for any period lasting longer than a week. sam played at a fabulously high level in 2018 from the usc game through the tech game. he wasn't bad for the rest of the season but he didn't play at a level of excellence like he did against usc, tcu, ou, west virginia, and tech. probably peaked against tech. played well against georgia at the end of the season as well. the rest of his career was pretty meh. everyone loves sam because he's lovable. i couldn't stand watching him attempt to throw...but his mid-2018 season has been the only more than a week at a time high level of qb play since colt got hurt against bama.
buchele threw one hell of a pretty deep ball early in his career but had the worst coaching ever.
case will always have the beatdown at ucla and the win against the agros. but he was terrible.
gilbert should have been great. he wasn't.
casey and heard flashed in random games but ultimately weren't great. i had irrational high hopes for heard. ash, swoopes, and whoever else don't merit consideration.