philly,
this is a quarterback league. a team without a top 3 def will only go as far as their qb takes them. Cassel is top 5 worst starting qbs in the league (no debate here). Chiefs are not even a top 6 defense, although they are somewhere around the middle, maybe top 10. The thing is though, Cassell can't convert third downs. He is terrible. When you can't convert 3rd downs, your def is on the field a lot longer than they should be. Which means they get tired, and ppl start to think the def is worse than it actually is.