I read an article this morning that uses a semi-new method of projecting QB's based on certain college stats. It establishes an average baseline of success that you're looking for in college, and can make a decent projection of how that translates to the next level.
Josh Allen was.... not good. Even by his stats in 2016, he does not project well. There's always the chance that he could be one of the few to outplay his college stats and improve his accuracy greatly, but it seems far more likely that he's DeShone Kizer or Tim Tebow.
https://www.sbnation.com/nfl/2018/4...backs-josh-allen-sam-darnold-projections-hype
One problem with the model is that Josh Rosen is projected very poorly based on his terrible freshman year... but his improved dramatically after that, so extrapolating the stats would probably put him in a top-5 group.
The top-4 based on the projections:
1. Baker Mayfield
2. Sam Darnold
3. Mason Rudolph
4. Logan Woodside
Woodside obviously played bad competition, but the stats being used kind of account for that. He could be the next late-round success story if he gets put in a good developmental situation (cough Patriots cough).