Turner's Opponent percentage at the rim is 50.7% which is pretty pedestrian. He gets a lot of blocks weakside off of help defense. Jeff Withey defends the bucket straight up at 43.1%. Turner is long and efforts really hard, but has slow feet when playing on an island. Ultimately Lyles is going to have far superior footwork as both players' games mature. If he can do something with it both offensively and defensively he should be the more dynamic player at the same size. Lyles needs to learn to defend out to the three point line like Favors to be something really special.
So, how is it that Lyles is able to improve but not Turner?