The 1999 Titans D was 25th in passing yards allowed, 27th in passing yards given up, and 20th in net yards/attempt allowed. They were 15th in points allowed and 17th in yards allowed. Yet Rob Johnson was 10-22 for 131 yards passing and took 6 sacks.
The 1998 Miami defense was 1st in points allowed, 3rd in yards allowed, 1st in INTs, and 3rd in NY/A.
Yet Flutie lit them up like an Xmas tree (21/36 for 360 yards and 4 rushes for 29 yards) and Moulds had a career day (despite fumbling a perfectly thrown bomb that he had caught and which probably cost the Bills 7 points and hence the game).
Let's stick to the facts.