It's hard to say cuz he's yet to prove himself against an elite.. But going by his two fights with Jones, Id say that pressure fighter's with real punching power would do him in..

Roberto Guerrero would fuck him up..

Victor Ortiz would give him hell and I would pick him to beat Kell's ass actually.

Josesito Lopez and Maidana would make him dig deep

Thurman kills him

I would love to see Brook-Berto...