Yeah, the difference between Ellis and Carter is the pick and roll ability. Again, if you compare their college years in almost every area Carter projected far higher than Ellis in almost every area hence why he was where he was in the big boards. Ellis looks like a 3 and D guy through and through, we'll see where Carter goes but his potential is certainly as a legit pick and roll scorer. Does he get the chance or develop? We'll see.
If a player can't score in pick and roll they're going to be limited to spot shooting or limited off the dribble. Keegan is the same way but he's starting to use his body to create separation. It's only one real game with this last play in, but the question with an Ellis defensively is what can he get away with? I brought it up before, players that play handsy defense tend to have very up and down postseasons. Refs aren't going to let you swipe down at every star when they make their move. They will however let you play physical defense. Carter plays classic winning defense. With is chest. He locks onto his man, denies the ball, and he doesn't just play passing lanes. The thing we have look at as it goes forward is what kind of strength and size Carter adds with a proper summer to workout. There was a play in the Dallas game where PJ tested him and immediately decided that was unwise. Carter is learning the ropes and was really trying to pull out the flop at times. Flopping on offense is the way to go, defensively he just needs to stay strong and lock in. On the screens he's getting respect though. That flopping has worked so far. One on one, probably not. He might want to cut that out.