It’s about marketable stars. Mahomes is the #1 star in the NFL right now. He’s in the commercials, he sells jerseys, and teenage boys get that dumb haircut to emulate him.
He plays under control because he has that luxury. Allen carries the offense on his back. If Allen had the running game and offensive line of the Eagles he would probably feel less of the need to play hero ball all the time.
I actually think that is the right call. Couldn’t have been closer though. No doubt Chiefs fans will be bellowing about how they got screwed for the next decade if they end up losing.