The Buffalo Bills have to be the most cursed franchise in sports. Not even just American football.
The Bills have never, ever been heads up better than their best competition. Now you may be able to argue that in 50/50 games, like this one against the Chiefs, they're a bit behind that mark, but I don't care. In most of their losses, they were clearly the inferior team. Against the Giants in a 50/50 Super Bowl, and they lost by one. Sounds about right. They're not exactly cursed but were damned lucky to be in the AFC East. The Patriots were the successors to the Bills and had slightly better results thanks to Brady and Bellicheat.