Great post. I would just say that, in terms of the offensive line, Cincy is a heavy blitzing team and the Patriots are probably the worst team against the blitz in the NFL right now. Simply put, you know when they are going to run, and you know when they are going to pass. They lack the offensive talent to do anything to make you pay for taking risks. If you think about it, the three most versatile players- Gronkowski, Hernandez, and Vereen, were all guys that could lineup and help with the running or passing game, be a short threat, mid-threat, and deep threat all at once. Because of this versatility, the Pats could take advantage of mismatches and make you pay for blitzing.
Now... well, what exactly can they do? Throw an ill-timed deep pass to a rookie? Make you pay with a four-yard slant that Amendola/Edelman catches while falling to the turf?
A good defensive coordinator will have his team pins its ears back all game, and simply use the numbers advantage of being able to send in the linebackers and safeties without having to pay the price. It is so obvious when the Patriots are throwing the ball now and none of their receivers are a threat to break anything open.
The offensive line had to face a great D-Line (maybe the best in the NFL) along with blitzes almost all game. Of course they are going to look bad.