He should have trained wit Fedor back in the day. Fedor could have used some of his tricks in there with Werdum and Silva, and dare I say Hendo.
Roger's standup is still serviceable at best. You have to get in there with guys that can really bang to develop. He didn't get so good at jj training with so-so guys, it was his dad and Renzo.
It makes you realize he just kind of lucked out in the jj department, having the physical gifts and the family. It's not like he sought it out like guys that got to a similar level that didn't have the same backgroudn. If those guys, like if for instance Buchecha, were to take on MMA, I imcagine they would train with the best strikers available.