You have these players stats wrong for their freshman seasons.Lowry and Butler are 36 and 34%. Wall is 33% DeRozan is the lowest at 28% and that is still significantly better.
RL is by far the worst of the lot mentioned as peers.
Kyle Lowry shot 22.7% (5/22)
Butler shot 0% (0/4)
Wall shot 32.5% (37/114)
Derozan shot 16% (6/36)