Difference being the Chiefs had/have a once in a generation type of QB. And they lost in the conference title game. Not the SB. Teams don't rebound to win a SB after losing the previous year's big game. It just doesn't happen. The Pats did it. But the Pats are the exception to everything.
They might be #1 in odds. But they aren't far and away better than everyone else in the NFC. Shanahan isn't much better (If at all) than Carroll, Payton, Arians, and McCarthy. They also avoided the Saints and Seahawks in the playoffs last year.
They were a blatant missed PI away from being the 2 seed. These types of things don't happen two years in a row. Most importantly, I think the likes of Wilson, Dak, Brady, and Brees are better QB's than Jimmy G.