Actually, it's more wildly inaccurate to base it completely on results so far. Statistical projections also aren't perfect, but it's better than the idea that the Falcons are the second best team in the league simply because they looked good against the Lions. true, but I guess I thought there might be some way to extrapolate from last year. preseason is a horrible barometer I think you misunderstand. They aren't using statistics based on preseason data, they put together statistical projections for the year based on the prior year, similar to PECOTA for baseball. That's what they use as a factor until week 8.