I don't see him comparable to JJ.
I think JJ was a bit overrated because of the team around him, honestly, but he was certainly a good leader and clutch. He stepped up when he had to deliver a key pass and did so accurately and on time. Underwood has not really shown ability to do that. I think Underwood might have been overhyped coming out of high school because he was just such an athletic freak/physical specimen. Was able to dominate a bunch of HS kids that are now either going to random colleges in Michigan as normies or working at Chipotle in the greater Detroit area. Now he is going up against other athletic freaks. He needs to throw passes into tight windows.
His mechanics are awful. Simply awful. Can he figure it out? Sure, of course he can. He hasn't shown it yet, though. I guess he dominated New Mexico and Central.
I tried to tell Michigan fans similar stuff about Jaydn Davis, but everyone said I was just being a Buckeye homer.
Now, Davis doesn't have the physical tools of Underwood, so it is not exactly the same. Underwood can certainly turn it around. But he needs to start showing out in September, and realistically, when he enters big ten play.
I could see Underwood being a bit of a Terelle Pryor, who also had bad mechanics, but Pryor was a better running, at least from what I have seen.
Just me trying to be a fortune teller - I think Underwood will be QB1 all of this year and Michigan decides to move on after the season. Unsure if QB1 going into 2027 will be Carr or someone from outside the program, but have a feeling Underwood will go down south for what he will see as his last college season and Michigan will want a more accurate passer. When you have such an elite running back and OL, you don't need someone making highlight reel plays at QB. Honestly, if Michigan had someone like Julian Sayin with that RB room I think they would be one of the favorites for the natty this year. Hiter is going to be special and Marshall is real good.