Is that really that big of a surprise? We don't have dick for a defense really. Name one household name on our defense that anyone in any fan base could recognize? Drew makes better than average players great. Our system, Payton, and Drew, make us great. (oh and how awesome of fans we are at home games)
The logic behind any type of ranking system for players/rosters in the NFL is beyond flawed. Players hit their peek at different times, and year-to-year consistency is very difficult to achieve in the NFL.