Yeah, they're a pretty confident bunch. I really don't see why. They're nothing special. They have a solid defense, solid running game when they don't fumble, and an average QB who happens to be a statue in the pocket. They also have a very good return game. Not to mention, denver has had an extra week of rest.
I don't even see this one being close. Manning will carve them up, whil VonDoom butcher Flacco.