I respectfully disagree. Open receivers are easy to find when things breakdown and DB's are covering for a long time. It skews accuracy figures. Completion percentage will be much higher when you are throwing to guys who don't have a DB around them as receivers get lost in zone coverage. Mayfield won't have that luxury on the pros. He won't be able to extend plays in the NFL like he did in college and reading the defense will be the determining factor. RG3 couldn't adjust, neither could Manziel. The only guy out of a spread offense to have decent success is Dalton and he is spotty at best. Mayfield can be a good player in 2 or 3 years once he has had time to learn to read defenses, but he'll be expected to the savior on day 1. I just don't see it happening. The commentators kept comparing him to Brees in New Orleans, but Brees came from a more traditional Purdue offense. Apples to oranges.
I honestly did not see a QB I thought was outstanding in this class. A few had the arm strength, but few had records I would risk my career over as a GM. Darnold has the tools, but I did see him make mistakes after mistake. If he throws 13 interceptions in the Pac 12, he'll throw 20 in the NFL. Rosen has an attitude problem to me. The Allen kid again looks good on paper, but he comes from an offense that is not conducive to making successful pro QB's. My personal opinion is that so many team are desperate for a Tom Brady type QB that they see characteristic's that aren't there in these guys. I just think Petrino it he QB whisperer.