There's been a saying among some people in the NFL that there's no better report card on your team than the way BillBelichick plays your team.
He's the ultimate mirror. He'll target your weaknesses. He'll make sure your strengths don't beat him.
When it comes to the Patriots, you can add MikeVrabel (and defensive coordinator DeanPees) to the list next to Belichick. The Titans put on a defensive clinic against the Patriots and Tennessee's approach basically said: you've got nothing on offense, good luck driving the field against us multiple times.