I think "poor man's Boozer" is a good way to look at Sullinger. Luis Scola is another guy I'd look at as a positive comp. David West is probably the "best case scenario" ceiling for Jared.
As far as numbers go, Sully was 10/10 per 36 this season. I think in future seasons as he gets more confident and assertive, polishes his jumpshot, and becomes a bigger part of the offense, he could be more like a 14-15 pt / 9-10 rebound guy playing 34-36 minutes a night. You can add a couple assists and maybe a steal or a block to that, too.
In other words, I think Sullinger can be an above average starting PF, but never an All-Star.