I wouldn't call that a trap line. The Bills have looked awful in their two road losses this season to the Saints and Bucs. I don't know if the Bills would be favored against any team on the road right now except the Texans and Niners (with Smith starting) and possibly the Cards or Browns (would be tight lines) any one else off the top of my head, inlcuding Miami, Jets, Bears, Lions, Packers, Seattle, and other average teams in the league inlcuding the Raiders and the Bills are 3 pt underdogs.
All I am saying is that this team definitely turned the corner and will be tough to beat Sunday.