At this point last year, nobody in their right mind would have predicted the Chiefs losing at home to Tennessee in the playoffs. (Hell, at HALFTIME, nobody would have predicted it)
It will take a shocker, but if any team has it in them to blow it, it's KC.
I tend to be slow to give Pittsburgh credit, and I saw them early when they looked like crapola, but they have some defense and can compete in a shootout. (They were scoreless late third qtr yesterday, so that might sound silly. But that was not vs KC's D)
KC should clearly be the favorite in the AFC when the playoffs start, but funnier things have happened.