I think McCarthy is overrated and will bust, but that's just me. I like other QBs more than him.
The key for me with him is that he wasn't asked to carry the offense. So what teams are doing is projecting he will be able to carry their offense at a higher level of ball, where defenses are better and more nuanced and prepared.
So I feel like I'm on crazy pills seeing rumors that he's ranked up there with guys like Maye and Daniels. Doesn't mean he won't hit. He may end up being a fine NFL QB. But I think it matters in where you slot him on your board which means what resources you are willing to give up to get him. He is this year's Young, i.e. he should be a round 2 QB but he won't go round 2 because he's a likeable kid and he has the talent teams want to see, so they fall in love with the player and will reach for him.
But Maye in comparison routinely had the offense on his shoulders. Roasting in that pocket looking downfield. Reading threats and making hot throws. Daniels too. Daniels has a bit more of a jump to him in terms of he often can't wait to bail out of the pocket (which will be his challenge as I have mentioned prior) but the dude can hit the long passes like a champ. Both have questions to them but both produced at a high level given what they had around them. And for all the flak Penix gets the offense was "Michael needs to make a play" and he did that, to the tune of getting them to the title game.
You can remove Penix from Washington's offense and they'd be lucky to make the top five. Remove McCarthy from Michigan and they'd still probably win the title. To me this stuff factors in to this level of decision. Or it should.