The difference between Bagent and Fields:
Yes, sometimes the offense “looks better” with Bagent taking what is given. But Justin Fields sometimes takes what he wants. The Bears’ Cover 2 defense is literally designed to take advantage of quarterbacks like Tyson Bagent. Can you go 12 plays downfield without a mistake? The Cover 2 fears players who can go downfield in one play (Justin Fields).
That’s not taking anything away from Bagent. He looks like he could have a lengthy career as a legit backup. But he will never strike fear into an opponent. Just Fields does, and his opponents have said as much.