If you think they can win by running the ball with Bell between the 20's and kicking field goals, that would be wrong. If you think they just line up and run New England over, well, that would be wrong to. Should he be a large part of our game plan, absolutely, but getting the ball in the endzone falls on the QB.
That means not always forcing the Ball to AB, as he did when they had 1st and goal at the four. His decision making will have to be sharp as a tack. Belichick is probably the smartest coach in the game, he knows who our playmakers are, and he will have his defense prepared accordingly. He does have a tough decision to make though, in regards to who he would like to take away. After what he saw in KC, he may decide to let Bell get his and try to limit our passing game, hoping that Ben will be mistake prone.
To suggest that this game will not revolve around Ben, is plain silly. Even if he doesn't have to pass for 350 yards to win, he will be responsible for getting them in the right play each and every time, whether it be run or pass. Will Ben be good enough to take what the defense gives without making the big mistakes? It is going to be all about Big Ben!