The current HW scene is Brazil is bare bones. Aside from Fernando Rodrigues they don't have many decent heavyweights. The UFC basically threw in 4 lower level heavyweights and 8 decent light heavyweights for that season.
Just look at his opponents record.
Yup, he's also super unproven and probably wouldn't have made it past the LHW's in that season. Not much there in Brazil at HW.