All stats, advanced or otherwise, don’t really work after just two football games. The sample size is too small, no one knows how to adjust for strength of opponent, and generally speaking, the numbers are just liars. At least for a few weeks.
With all of those caveats out of the way, I still like Football Outsiders’ DVOA for a quick glimpse into what may be going right or wrong. DVOA is fundamentally an efficiency stat and we can at least glean how efficient the team and its players have been, even if playing the Bears and their stellar defense (and anti-stellar offense) are big contributing factors.