I am surprised nobody has mentioned the records of the teams the Pats and Colts have played against.
The Pats, and the amazing Brady, have played against teams with a combined 11 games below .500. 11!!
Let's look at the Patriots opponents:
Jets: No category in offense or defense within the Top 20.
Chargers: No category in offense in Top 10, 1 category in defense in Top 10 (rushing yards)
Bills: Self explanatory. One category in off/def in Top 20.
Bengals: Off is in Top 5, though all defensive categories are in the bottom three!
Browns: Top 10 Offense, the worst collective defense.
Cowboys: One of the top O's, but only one defensive category in Top 10.
Dolphins: 2 Top 15 O categories, worst PPG in league, and contending with Browns for worst collective defense.
When you view the teams the Pats have played there is only one team who has one defensive category in the top ten!! One category!!
The teams they played have been horrible defensively, that is plain and simple. I am not saying the Colts have played Top 10 D's every time, however, they have played much, much better teams. I just thought it was important to add context here. Given the teams they have played 27-2 becomes less amazing.