Probably a PFF generated stat, so take it with a grain of salt. It’s also worth noting I’ve read before that he faced more pressure than just about every other college QB (Darnold was close though).
I've never been a fan of the QB rating, but QB rating in college football is completely useless.
Comparing what Baker Mayfield, Mason Rudolph, and Luke Falk do as a passers to guys like Sam Darnold, Josh Rosen, and Josh Allen makes no sense. They play in completely different schemes. The route concepts and the timing are just way off.
You cannot compare Air Raid QBs to Pro Style QBs. The philosophies of those passing offenses are completely different. The timing and the route concepts are miles apart.
And are passes that are thrown away factored into this? ...because you're not going to see Air Raid guys throw the ball away very much because their reads are either pre=determined or that ball is coming out so fast that pressure does not matter. Darnold, Rosen, and Allen are hanging in the pocket making reads.