There's a story on ESPN about injuries this year, and the basic gist is that injuries are up leaguewide. As Belichick has said, there's a theory that the new CBA that gives the players more time off and easier practices is contributing to this.
http://espn.go.com/nfl/story/_/id/10192386/clayton-mailbag-injury-epidemic-ignored
But here's a quick sort of starter games lost this year to injury or suspension:
2013
NYG 87
OAK 78
SD 74
NO 71
ATL 69
SEA 64
NE 62
DEN 61
GB 56
JAX 55
ARZ 54
DAL 53
CAR 52
IND 52
TB 51
CHI 47
PIT 47
HOU 45
MIN 44
SF 42
STL 41
WAS 39
BUF 35
BAL 34
DET 34
CIN 31
MIA 30
PHI 26
TEN 25
CLE 23
KC 21
NYJ 11
So yeah, the idea that we've been especially bad off is just wrong.