Which guy won't bust and how is a bust defined are good questions too. I think the bust potential is high for all of them if less than pro bowl or 5+ year starter is the cutoff. I don't see Rosen as much of a football player, he's a guy who looks the part but lacks the heart imo. Allen has shown nothing but size and arm, a lot of unrealized potential. Lamar is a super athlete who plays qb, but very scheme dependent. Darnold is an unfinished product still, has regressed in college. Mayfield is off the charts in many ways but less than ideal size, for what that is worth. Rudolph is prototypical but is lacking arm etc. Maybe Lauletta or White will turn out the best and go to teams that don't need qbs, as an afterthought shot in the dark. They all have bust potential. Allen Jackson and Rosen are guys I could see not making it. Jackson is amazing dual threat but I can't see that lasting in the pros for too long. If I had to bet on one of them not to bust, I would pick Mayfield.