Apparently you haven't watched many of the Bengals games this season. Gruden has been fantastic (yes I used that term) with his halftime adjustments. And the DLine gets better as the game goes along because Zimmer has been using an 8 man rotation when they are all healthy.
If there is any complaint about this team is they take a while to get into the flow of the game. They find themselves behind in a lot of games with a hole to come out of. With both Pittsburgh and Baltimore they just ran out of time.