My post already answered your question. The offense absolutely struggled. The point here, that you're missing, is that Marrone squeezed everything possible from the offense to help get the team to nine wins. He actually did a great job. If Rex had the same team they would be lucky to win two games. And let me point out, again, if it weren't for two stupid fumbles in the KC game they are 10-6. But, that's history now. I'm a Bills fan and have to support Ryan even though he is an incompetent buffoon and his history suggests that it is less likely than not that he can change.