Idk, KC felt vulnerable last season too and I think the 13 seconds year was probably the best Bills team. The OL this year is an admittedly big difference though; hopefully it's enough to get Buffalo to the promised land.
Think our defense is significantly worse than years past but they've been able to come up with a lot of takeaways to stay afloat; we'll see if that continues today but KC has generally taken excellent care of the ball this season (though the same could be said for Baltimore until last week).