It's pretty much a three way tie. The Bills' share is defined by a tragicomic penchant for heartbreaking losses. The Browns' share is defined by a sheer lack of talented personnel on the field. The Lions' share is defined by total irrelevance (never even been to the Superbowl).
No matter how you slice it though, it's just bad times all around.
Not that he's getting help, but Flynn is a statue back there. You simply can't afford to get sacked at that rate.