Lebron James
Carmelo Anthony
Josh Smith
Dirk Nowitzki
Thad Young
Andrei Kirilenko
Shawn Marion
Danny Granger
David West
Paul Millsap
Ersan Ilyasova
Amir Johnson
Gallinari
Batum
Chandler Parsons
This is probably the millionth time I'm doing this, but I guess I'll do it again.
Lebron James - of course, he'll be better
Carmelo Anthony - will most likely be way better
Josh Smith - it's possible, but I'll take the current $9mil/yr Green over the max JSmoove every day of the week
Dirk Nowitzki - never plays SF, ever
Thad Young - basically only a true PF now, he's taken just 12 treys these past two years, I can't compare Green with a full-time PF
Andrei Kirilenko - he may have won the duel yesterday, but I don't see him beating Green up for the next three years
Shawn Marion - getting old, great on D but won't be better than Green at age 36
Danny Granger - same goes for him; he's a good scorer who's getting old and not-so-good on D
David West - can't count full time PFs when comparing to Jeff
Paul Millsap - curious comparison, but I'll take a prime Jeff; you can make a case for Millsap though
Ersan Ilyasova - he should be compared to Jeff a lot more, after also underperforming with that hefty contract; best-case scenario, they have similar upsides, worst case: they're both wastes
Amir Johnson - another PF...
Gallinari - signed for more than Jeff, but a pretty good SF himself, he's a volume shooter and can be better than Jeff
Batum - one of the guys who's kind-of like Jeff, I think he has high upside as well and I'd take either Jeff or Batum
Chandler Parsons - too young to determine, but he has huge upside
Basically, I can't really compare with the full-time PFs while a lot of SFs can be bunched together (Batum, Gallo, Gay, George, Parsons, Leonard, ---) but I can't piece together a list of 15 SFs better than Jeff. Some (Durant/Melo/LBJ) are guaranteed better, but those three are the only clear-cut. Also, you have to look at the money problem (Gay, Josh Smith) which is the point of this thread anyways.
He shouldn't even be in the conversation for top 15 PF, he's not close.