if Berto was a more active professional I'd pick him to seriously hurt Bradley, at his current level of innactivity I think Berto pulls off a narrow points win. Not sure Bradley has enough tools overall to unset Berto.
Berto is too physically strong for him but bradley if he stays in decent range can oiutbox him. bradley is the bizniz at lww
Fairly big size difference and Berto has good hand speed. I see being on the outside a bit of a problem.
