Based on the games played and the results of those games, I can't disagree with you.
However, I do think the Bills are better than what they've shown. All teams have to overcome injuries, but the Bills have been missing some key players on offense and defense; and it appears that our defensive superstar (White) is playing more than just a little dinged up.
But ... again ... dominant teams overcome. The regular season is only half over and there is time for Beane to add a piece or two, as well as time for the coaching staff to make some mid-season adjustments (i.e. - stop abandoning what's working).
Mostly, it's on the players to execute. Josh needs to be more consistent. Receivers need to be more consistent. The defense needs to do better and get some takeaways.
It's not too late to become ready for Prime Time.
As unlikely as it is, they can start with beating a very tough Seattle team.
Go Bills!