If you know for sure they will be passing every down and distance and every series should be in four down territory, blitzing every down can be a recipe for disaster. Watch your lead fade away when Jones starts connecting on some of those longer throws he missed early on, or when guys get huge YAC opportunities with most of the defense behind them. With a practically four score lead early in the game (Patriots needed three successful two point conversions down 24-0) it’s ok to make your opponent spend 5-6 minutes per drive to get a few points if they can get them at all.
All defenses go into a “prevent” style when the clock and the lead call for it. The clock becomes a weapon your defense didn’t have when the score was closer and/or there was more time on the clock. And the other team loses the ability to stay balanced with the run (because of the clock), so no reason to keep a bunch of guys lurking around in the box when our front four were getting consistent pressure.