Is this a case where past post-season upsets are making people gunshy to take the obvious result? Baltimore, Denver, and Indianapolis are not good enough to go into Foxboro and win. New England is better than they have been in many years defensively and they are elite offensively with a healthy Gronk. They have demonstrated absolutely no weaknesses at home this year. They even were a dropped pass away from beating Green Bay in Green Bay, so they've shown they can hang in the hardest environment.
You're getting near even money for them to beat Baltimore and Indy or Denver at home. They've handled two of the three teams, and people are worried about Baltimore because of the past and not from any evidence demonstrated by the 2014 NFL season. What's not to love?
Seattle may beat New England in the Super Bowl, but it's certainly worth the +343 price you're getting on New England. You could hedge if you have doubts on Super Bowl week.