For a Top 10 pick, he's really not asked to do much in terms of responsibility. He doesn't have to lead an offense like a quarterback. He's not asked to cover Randy Moss one on one like a cornerback. Or keep Dwight Freeney in check like a left tackle. Roy is allowed to freelance, and there's really no way to point to him and say "Wow, Roy really had a bad game" because he's not really held accountable for anything. Run defense will be charged to the front 7. Pass coverage is blamed on the CB's & FS, or maybe even the D-line for not providing pass rush. When Roy's burned in coverage, people claim that its not his fault since that's supposedly not what he's supposed to do.
So, I'm happy that Roy is making plays ... its really the only thing he's ever held accountable for. Its a nice luxory for him.