The NE defense is soooo much more successful using plays that incorporate some element of disrupting the QB. Basically they need just a wee bit more pressure than a basic 3 or 4 man rush to make the unit click. I don't know what anyone expects when rushing just 3 or 4. Not much pressure, that's what. Also BB isn't even letting them go full out. They need to cover their lanes, contain the QB and stop the run. Any playoff QB with 7 secs is gonna eventually find an opening. Its almost like child's play to these guys now the way the dance around in the pocket and practically go on autopilot scanning receivers down the line until one get open - after they play breaks down usually. Obviously the NE DBs have the skill, and BB the ability to confuse and cover in zone most of the time, but I don't see it as the most effective approach.
But stir in some designed pressure... a delayed blitz here, an overload there, etc, and it really seems to prime them to dominate.