Mobile QB's have a shorter NFL life. IMO last year playing hurt cost him a couple years in terms of salary. He's a decent QB, but he won't be mentioned with the greats.
not only that, but fighting to return for Game 1 when he obviously wasn't ready.
He should have pulled HIMSELF from that game in the playoffs last year. Give his team a 14-0 lead, take that hit, and get outta there. If Cousins keeps the lead, RG3 has a week to heal and re-elevaluate. If Cousins tanks it, at least RG's job is safe

Shanahan is so scared of RG3 saying "It's him or me" and forcing him to get fired that he won't stand up to his immature QB and tell him that he plays when coach says it's okay.