A couple things. Emanuel Stewart is not selftaught. In fact, most of the things that, early in his career, Emanuel got credit for were actually the work of Bill Miller. Also I don't buy into the whole "Cus is great" trip, but that's merely by personal bias.
Freddy Roach is a good guy- very friendly- but I always figured he "trained" guys that were finished product when he got them. But I sat down and watched Pacquiao fights the other night and he has improved sooo much under Roach.
The problem I see is that there are so few true teachers anymore- so many guys are so lacking in fundamentals. It is hard to be polished if there's nothing to work with.
Think on this for a second. DeLaHoya was trained by Jesus (Jose?) Rivero- he went 8-0 with 6kos (Gonzalez, 41-0, and Whitaker went the distance) and was truly becoming a great fighter. He switched to Emanuel Stewart and then Gil Clancy (RIP)and they totally messed him up. Roach didn't help him at all either.