He has faced the "incredible defenses" of Miami, Cinci, Cleveland, Dallas, Philly, NE, Cleveland and Cinci again ...
So he has faced 2 good defenses NE, Philly and today Washington. Yet he has played 6 defenses that are bad to terrible.
Now lets look when he played those 2 GOOD defenses. He had a good game against NE - but lets look at Philly:
11/18 for 183 yards, 2 TD's, 1 interception, 1 fumble, and 3 sacks
Not exactly stellar. He does good against bad defenses and mediocare against good defenses.