The Bengals' defense is the worst ... ever?!? Six wild NFL trends entering Week 13

Just how bad is the Cincinnati defense? How does the Giants' run D stack up since 1978? And are the Patriots and Bears legit? Let's use DVOA to find out.

By Aaron Schatz · ESPN Top Headlines

Just how bad is the Cincinnati defense? How does the Giants' run D stack up since 1978? And are the Patriots and Bears legit? Let's use DVOA to find out.