There's tons of variance in wins and losses, so any ratings system comparison should consider results over the long term. If you're interested and have the sta

There's tons of variance in wins and losses, so any ratings system comparison should consider results over the long term. If you're interested and have the statistical background, you should definitely give it a shot. For related ideas, check out Brian Burke's excellent Advanced NFL Stats blog: http://www.advancednflstats.com/ http://www.advancednflstats.com/