Agree with comments here. Brown v Tatum is an interesting way to judge his game.
He is still "riding the brakes" a bit, thus, he hasn't quite conquered the urge to pass when other options present themselves.
Tatum has a crazy handle and, at this time in his career isn't using it much. His team mates are teeing him up nicely for perimeter shots and that seems to be where it's at for a guy with 6 NBA starts. He doesn't miss free throws and he is a top rebounder just because his instincts are so good.
He "watches the game" a little, but not even close to how Brown was last year. He has not been aggressive to the hoop yet as I don't think he thinks he's ready. His defense, if you watch it, is really good with that wingspan and excellent judgement anticipating his opponent.
He will eventually draw attention from opposing teams as a shooter, freeing up the other guy from Duke.
In three years, he might just be our best player.