He has the talent, but doesn't have the consistency.
If the team revolves around him, and players actually give him the ball (I see you Felton), then he can put up a lot of points. He gets to the line at a good rate, great FT shooter, but when he's out of rhythm or lacking confidence he'll give you a 4 point half.
Anyone who would have watched him on the Knicks knows he can have these kind of nights, but he won't do it 5 games in a row. He's still young so the confidence and consistency can develop... but he can play. The bigger question is, assuming they keep him, do the Nuggets try to make him their #1 scoring option, or let him be 2nd/3rd.