One person's interesting (and compelling take):

http://www.nypost.com/p/sports/more_sports/book_stats_say_pats_antics_haven_8MfYgveHFfSZ66NC0wGQhN/0

"What isn't in dispute is Belichick and the Patriots — despite a Week 2 loss to the Cardinals this season — remain practically untouchable at Gillette Stadium long after Spygate was uncovered.

Including playoff games, the Patriots are 34-7 (.829) at home since Spygate was uncovered after the 2007 season opener and 77-16 (.828) since 2002, numbers that are such huge statistical outliers in the NFL's salary-cap era of parity that O'Leary says they can't be attributed just to Belichick's coaching skills and Brady's quarterbacking."