Rosen is gonna be better than both of them. Only reason you can say he isn't right now is this is his first start.
As far as Hackenberg, all that hype he got after his first year was too much, but he's not as bad as ppl want him to be. Gets no help from his OLine, and coaches don't seem to know what they want him to do. Resurrection is right, when he had O'Brien working with him, he did some good things. Been a trainwreck since he left.
Just wait for Vernon Adams breh.....
No seriously just wait, I have no idea how good dude will be.