They are a million great things to say about the performance of the Steelers' defense for the first three weeks, but I think this statistical analysis may be even more illustrative. Here is how the three opposing QBs have played against the Black and Gold and their two other opponents.
Matt Ryan Points comp/att Yds Ypa TD/Int Rating
Week 1 v. Pittsburgh 9 27/44 252 5.73 0/1 67.6
Week 2 v. Arizona 41 21/32 225 7.03 3/0 117.3
Week 3 v. New Orleans 27 19/30 228 7.60 2/0 108.8
Vince Young (Pulled)
Week 1 v. Oakland 38 13/17 154 9.06 2/0 142.8
Week 2 v. Pittsburgh 11 7/10 66 6.60 0/2 48.3
Week 3 v. NY Giants 29 10/16 118 7.38 1/0 105.7
Josh Freeman (Pulled-end)
Week 1 v. Cleveland 17 17/28 182 6.50 2/1 88.7
Week 2 v. Carolina 20 12/24 178 7.42 2/0 102.4
Week 3 v. Pittsburgh 13 20/31 184 5.94 0/1 67.1
In nine games, these three quarterbacks are 6-0 vs. the rest of the league, 0-3 against the Steelers. They have thrown 12 TDs/1 Int against the rest of the league, 0 TDs/4 Ints against Pittsburgh (not incl. Kerry Collins int.). In those other six games the lowest quarterback rating is 88.7. Against the Steelers' the highest rating is 67.6. These qbs are putting up an average of 28.6 pts/g against other teams and 11 against the Steelers (with the only two tds allowed coming in the last two minutes of each game.)
Totally dominant against quarterbacks who are carving up other teams in the league.