I think Marinelli hurt Jason's career more than Jerry. The offense was good enough to a couple but the defense was never there.
What didn't help was that Rob Ryan wanted man coverage corners so they spent top money at the time for Carr and then gave up draft picks to select Claiborne. The following year they can Ryan, his 3-4 complex scheme and then bring in Kiffin who made his name with the tampa 2 zone coverage.
Then after that disastrous season they promote Rod, Kiffin's DL coach from TB, who had the same mindset as Kiffin. Bend and don't break defense, but still had 2 man corners, and Church and Wilcox as safeties and Scandrick who could play decent in either coverage. Not an ideal lineup, especially when the DL was slowly being transitioned to the 4-3.
Rod wasn't the answer, but they sort of screwed the pooch before he even arrived with their big 2012 offseason and then hiring coaches that ran more zone when their corners were more man 2 man guys.
Rod obviously did run man coverage here and there, but who knows how well he and his assistants were at getting the corners to be as effective as they could be. Especially with Mo, who, not to be mean, wasn't that bright and got snake bit a lot either by injury or poor early on play