Brown, Bentil and Jackson are raw, for sure, but that should be expected for rookies. Also, they are playing with borderline NBA players, D-leaguers and walk-ons which doesn't help their games. My big takeaway is that these 3 guys are going to be legit NBA players and have NBA-ready bodies. I would not put a timeline on that as one SL game is not enough to say when.
Really hope Bentil and Jackson make the team.