Better scorer, better moves, and defintely a 5 when we don't know whether Sully can play the 4 yet in the NBA. Jefferson exploded in year 3 in BOS and went up to 21 PPG and 11 RPG his first year in Minn and no one was that surprised.
I see upside for Sullinger, but it's tough to see him getting to Al's 4th year numbers two years from now.