I agree with all of that, and I'll add another point: The Patriots' schedule often looks weak -- because they don't have to play the Patriots, and all of their opponents do!
But again, Banks wasn't bashing the Patriots. He was just stating the plain fact that they have yet to face and beat ANY of the other teams that have looked legitimately strong for long stretches this year:
Chiefs
Cowboys
Falcons
Giants
Packers
Raiders, with Carr
Seahawks
Steelers, with Ben
The question is, who has? Which of the contenders do have multiple victories against quality opponents? The answer turns out to be most of them:
Chiefs (Raiders x2, Falcons)
Falcons (Packers, Raiders)
Giants (Cowboys x2)
Packers (Giants, Seahawks)
Seahawks (Falcons, Patriots)
Steelers (Chiefs, Giants)
IMO the Chiefs are the most "tested" team in the playoffs. The Cowboys and Raiders cruised on their losers' schedules based on 2015 and deserve the "untested" label along with the Patriots. [EDIT: Actually I take it back, the Cowboys did beat the Packers + Steelers]
Of course, none of this changes the fact that Pats were the most dominant team in the league over the whole season, or the fact that they look like the most complete team and should be favored to win it all. It just is what it is.