I have no idea where you get this idea from.
The Bills defense gave up 29 or more points only FOUR times last season. The AFC Champion Chiefs also gave up 29 or more points FOUR times. The Super Bowl champ Eagles? THREE times.
Where is this idea coming from that the Bills defense is some horrible unit?
As for last night, two things are at play:
1) Baltimore has an incredible offense. They have a top 5 QB, top 5 RB, top 5 OL, top 10 WR, etc. They are stacked. They scored 30+ points in ELEVEN (11) games last season.
2) Bills had several defensive players missing. Very key rotational players that will be playing a significant portion of our games when they're healthy/unsuspended. Tre White, Hoecht, Ogunjobi, Carter.
Will the Bills have a top 5 defense? No. But will they be middle of the pack (15th-ish) just like last year? Most likely.