The Falcons had Dieon Sanders who was also on the list. The Saint's defense was good for the most part; it was their offense that sucked. The Rams were the same way until they entered the 90's.
Jerry Rice did it in playoff games against very good defenses as well. Now you may not like the fact that Jerry is number one but don't try to play down his accomplishments.
Look up the defensive stats for those teams yourself.
NFL Stats: by Team Category