I've seen it suggested that the Giants were successful against the Patriots because NYG coach Tom Coughlin and NE coach Belichick both worked as assistants under Bill Parcells back in the early 1990s. As a result, Belichick never had the mystique or intimidation factor in his favor against the Giants like he did with most of the league.
Just an interesting thought ...
I can believe it. It’s amazing some of the things Belichick does just to get into the other coach’s head. Like he’s the only coach I’ve seen decline a delay of game penalty. You see that when a team is just on the + side of the 50 but punts, often they’ll let the clock wind to take the penalty and get 5 more yards to play with to avoid the touchback. Do that against the Pats and Bill declines the penalty. Nobody declines that penalty. I don’t really think that 5 yards makes much of a difference one way or the other. But the act of saying “you can’t have it” is a very effective message.