Lets look at the schedule:
At Rams - W
At Falcons - W
vs Giants - W
vs 49ers - W
at Buffalo - W
at Washington - W
vs Dallas - W
vs Chicago - L
vs Arizona - W
at Giants - L
vs Patriots - L
at Seahawks - W
at Dolphins - W
vs Jets - W
at Dallas - W
vs Washinton - W
13-3 looks pretty attainable.