Seattle always makes at least one mistake that keeps the other team in the game. In Indy they allowed a blocked FG for a TD which would have put them up 17-0 like husker07 said. I would pick Seattle over Denver. Seattle's offense is better than Denver's D. and Seattle's D matches up pretty well.
That's the way I see it. I just hope our defense can match their physicality. I think we can. Especially now that Von Miller is back. Denver and Seattle would be a great Super Bowl.
If Seattle can slow down the Denver passing attack Denver would be in trouble. If Denver tries to shut down a certain part of the Seahawks offense, Seattle can lean on Marshawn Lynch, they could also lean on Russell Wilson. Percy Harvin should be back in a few weeks.