The thing on his HS film that made him unique or special was his release. There are a lot of good HS shooters but not many of them are 6'7" with a lightning quick release like that. It allows him to get his shots whenever he wants and when defenders take that extra step into him to deny the shot he can drive past them and get his mid-range shot. So he's not like Oglesby or some others who were restricted to outside, open shots but he can get shots off late in the shot clock with tight defenders, hit mid-range over defenders, and even has some post pivot moves and fade aways when needed in close.
He's a pure scorer and has that mentality too. If Kris was our offensive killer off the bench last year, it will be Sandfort this year and he should average 12 or more in 20-24 minutes, especially since that 2nd rotation will need a primary scorer whenever Kris sits out. I don't see much if any gap between Patrick and Sandfort, although their games are different. Sandfort may be the better defender and pure scorer, while Patrick is better in transition and a better passer.