Just for reference, we were 3 point underdogs at gametime for the 2006 AFCCG played at Indy, which is also coincidentally the last time we played in the postseason on the road.
I think that this yr's comparison is probably on par with the 2006 situation, all things considered. Of course, we had a much better defense that came in #2 in the NFL having allowed an average of 14.8 ppg throughout the season, but our offense was right around the same effectiveness at something around the mid-20's.
Obviously, it could be argued that our offense is more effective this year, especially if we can continue with the running game, but our point differential is actually worse this year (average per game) at about +7, where it was +10 (average per game) for 2006. All things considered, I think the line should be a point higher or so than it was for our road matchup in 2006. Just my opinion, but I think there are some similarities to both teams and the fact that Manning had a HFA for the AFCCG, along with a good offense.