The Bengals is what I'd worry about.
I think both the Steelers and Ravens, while playoff contenders, will struggle to find their usual consistency. Osi or not, the Ravens D is clearly getting older in key areas and yes, the offense is somewhat suspect.
The Steelers did well to address their OL in this draft. But they're also a team in transition for some of the same reasons.
Neither are falling off the face of the earth but it's not a foregone conclusion, like season's past, that you pencil them in automatically either.
Perhaps other teams step up......perhaps Buffalo, with the schedule they face is one.