That's good for us. Rex still doesn't know QBs. He lifts a QB into the starting job who has never thrown for a TD in the NFL - in 4 years. That QB has not faced any starters in preseason. It was either EJ (1x) or Cassel (2x). He may not be the starting QB when we are playing the Bills.
I personally think that Cassel would have been the better choice for now. But I would have put him on a short leash. Cassel may not be starting material for the duration of a season now but you cannot overlook the experience and his two outstanding season in KC and NE.
Whatever hurts them, helps us and Rex is doing his best to screw up the O in Buffalo as a continuation of his time as a Jets HC.