I disagree.
A game manager QB is someone who stays out of the way and rarely influence's the game's outcome. Jalen Hurts can often win games almost by himself, much like Andrew Luck did. That's a franchise level QB.
And AJ Brown was doing horribly in Tennessee. And then suddenly he exploded once brought in to work with Hurts. You ask any Eagles player if Hurts makes them a better team, and I guarantee you they will all say the same thing.