I think some people may be missing or not considering how much better the Pats play at home:
2014 Home: 4-0, 34.3 PF, 18.5 PA (+15.8)
2014 Road: 2-2, 25.3 PF, 25.6 PA (-0.3)
2013 Home: 9-0, 31.8 PF, 20.8 PA (+11.0)
2013 Road: 4-5, 24.1 PF, 22.0 PA (+1.9)
2012 Home: 7-3, 32.4 PF, 23.3 PA (+9.1)
2012 Away: 5-2, 33.4 PF, 21.0 PA (+13.4)
2012 Neutral: 1-0, 45.0 PF, 7.0 PA (+38.0)
2011 Home: 9-1, 31.4 PF, 18.4 PA (+13.0)
2011 Road: 6-2, 33.4 PF, 23.5 PA (+9.9)
2011 Neutral: 0-1, 17.0 PF, 21.0 PA (-4.0)
2010 Home: 8-1, 32.6 PF, 20.6 PA (+12.0)
2010 Road: 6-2, 30.8 PF, 19.5 PA (+11.3)
Total Home: 37-5 (.881), 32.2 PF, 20.5 PA (+11.7)
Total Road: 23-13 (.639), 29.6 PF, 22.0 PA (+7.6)
Total Neutral: 1-1 (.500), 31.0 PF, 14.0 PA (+17.0)
Looking at just this year and last:
Home: 13-0, 32.5 PF, 20.1 PA (+12.4)
Road: 6-7, 24.5 PF, 23.2 PA (+2.3)
So in the post Welker/Hernandez era, the Pats have played better to the tune of 10 points per game playing at home.