As someone on here said yesterday, the Steelers were the worst 11-0 team ever. I follow them VERY closely, and while their defense might be very good, this is in no way a dominant team. I think @CAPE is correct here - a good team for sure, but I'm not convinced they do much of anything come postseason. They don't run exceptionally well, their receivers drop a ton of passes, they're still susceptible to dumb penalties, and they have a QB situation where if Ben gets hurt, they're done. And he's not the most durable guy behind center anymore.
Much credit to Washington - it was fun watching their D fly around yesterday. If I was a Washington fan I'd have more hope than I've had for many years.