I doubt you'd come up with 30 -- there are only 30 teams, and I'm tryign to think if any team but maybe Utah that has 2 better than him. And several teams (Houston, Charlotte, etc.) highly questionable if they have even one. Maybe 20 or so clearly a grade above, and then another 20 guys or so all in Jason's general range.
K let me try than
Better than JT via Landslide 18
LaMarcus Aldridge, Chris Bosh, Tim Duncan ,Kevin Garnett, Pau Gasol , Blake Griffin , Al Horford , Serge Ibaka, David Lee, Kevin Love, Dirk Nowitzki, Zach Randolph , Josh Smith, David West , Al Jefferson
Simply better 14
Anthony Davis , Amar'e Stoudemire , Andrea Bargnani , Ryan Anderson, Carl Landry, Paul Millsap, Larry Sanders, Luis Scola, Nene Hilario , Anderson Varejao, Thaddeus Young, J.J. Hickson, Ersan Ilyasova, Kenneth Faried
Debatable/given same mins 10 (most of these are personal prefernce)
Derrick Favors: imo is easily better right now than JT hes just stuck behind a tough as hell frontline in Utah
Andray Blatche: far more skilled player avg 16 and 8 two seasons ago and is 11 and 6 this in less mins
Kevin Seraphin: more talented, skilled better mid range game and a better athlete
Ed Davis: getting starters mins since AB went down and has shown he can be a monster
Marreese Speights : stuck behind Gasol/ Zbo, is a elite mid range shooter, tough guy, better D
Drew Gooden: career double double in tough position with Bucks youth movement
Glen Davis: been Magic top player before injury on a team that overachieved so far
Boris Diaw: gifted passer/ball handler was fantastic in last year playoffs since he came to SAS
Carlos Boozer: if were not for his horrendus defense I'd have him over JT
Jason Maxiell: better defender bit undersized and better finish in traffic and around the rim