The President Of PeaceTrump! Trump! Trump!
I'll be rooting for the Broncos...but because all my non-ITS friends (yes, I have a few) think that they will cover and since Vegas doesn't like to lose, I think Seattle covers (+2.5) and I would take the under at 48.
I'm going with the well researched scientific method: Broncos because their logo has a horse in it.