We won't know about 9ers, Eagles or us for a few weeks. Week 1 is chaos and unpredictable. So many teams starters never touched the field in preseason...and need a week or 2 to get in game readiness. Plus it was bad weather in so many games.
Cincy is a great example. Does anyone REALLY put too much stock in their aweek 1 loss? Don't. We had a great week....but the Giants simply unraveled quick and didn't function like a real NFL team. Philly last year also looked bad Week 1 and barely eeked out a win over the Lions....then went on the following week to look all world, and won like 9 or 10 games straight.
Smart fans, whether it's Chief fans, Bill's, EAGLES, 9ers, or Cowboys will not get too crazy happy or dejected after 1 week.... and will evaluate over the course of a month....not 3 hours.