I don't get why people don't think Sullinger can sustain this level of play. His statistical production is a little better than last year. The "eye-test" for me sees a player more able to take command on the court than last year.
Sully's already started to come back to Earth in terms of his shooting. In terms of production, that's the part of his start that seemed unsustainable to me.
The other thing that I'm still skeptical about is his ability to stay on the floor for the whole season. History suggests he'll have difficulty with that.
His rebounding, passing, and solid defense all seem like things he can keep doing.
You think Sully would average 2 steals and 1.2 blocks if given 36 minutes all season? That doesn't seem sustainable to me either.
I don't think Sullinger will sustain every individual statistical of course but neither would anyone we trade with. I think in general, he can sustain this level of play; score consistently (but not 45% from 3 or whatever it is so far), continue to be a rebounding force, and in general be a high BBIQ (for a big) player.
Durability is the bigger concern. I think people forget how hard it is to go from 32 games to 82 games for these young players so you have to allow for an adjustment period but durability is a legitimate concern with Sullinger. I am only slightly more worried about Sullinger's durability than I would be for the average (average in terms of durability) NBA player at his age.