Thanks for that break down.
Worth noting on that 2006 Indy team is that Bob Sanders was hurt the majority of the season. In week 17 the colts D gave up something like 330 yards rushing to Jax in a must win game for play off seeding (they still won iirc). Sanders returned for the playoffs and it was like a different team.
It would be interesting to see how the other SB winners of the same time frame stacked up.
Yes, I have never seen one safety make as much difference in a team's run defense as Bob Sanders did that year. As for your last statement, ask and ye shall receive.
The 49ers during Montanas era were even more consistently dominant on defense than the Patriots, with Brady at the helm:
1981 (Montanas first full year as starter): 2nd (250 pts.). SF wins Super Bowl.
1982 (23rd in the strike-shortened nine-game season), 206 points. 3-6 record.
1983 (4th), 293 points. 10-6 record.
1984 (1st), 227 points. SF is 15-1, wins Super Bowl.
1985 (2nd to the other-worldly Chicago Bears defense), 263 points. 10-6 record.
1986 (3rd), 247 points. 10-5-1 (Montana played only eight games).
1987 (3rd), 253 points. 13-2 record (Montana started only 11 games).
1988 (8th), 294 points. 10-6 regular season, SF wins Super Bowl.
1989 (3rd), 253 points. 14-2 regular season, SF wins Super Bowl.
So, as phenomenally as Montana played in his Super Bowl appearances, he also had the 2nd, 1st, 8th and 3rd best scoring defenses, respectively, at his back.
As for the Steelers, during Bradshaws era, they played 14-game regular seasons until 1978. Taking into consideration only the years bracketed by their Super Bowl victories, Pittsburghs scoring defense rankings were as follows:
1974 (2nd), 189 points. 10-3-1 regular season, wins Super Bowl.
1975 (2nd), 162 points. 12-2 regular season, wins Super Bowl.
1976 (1st), 138 points. 10-4 regular season.
1977 (17th), 243 points. 9-5 regular season.
1978 (1st), 195 points. 14-2 regular season, wins Super Bowl.
1979 (7th), 262 points. 12-4 regular season wins Super Bowl.
The Steelers average scoring defense ranking for the four Super Bowl champions was 3rd out of a 28-team league.
All data were excerpted from
Pro-Football-Reference.com - Pro Football Statistics and History.
All of this really makes you appreciate more fully what Peyton has accomplished as an NFL quarterback. He has been dealt a hand more comparable to that of Dan Marino than Tom Brady or Joe Montana, i.e. excellent skilled position players and, for the most part, mediocre defenses.
There is no question that Montana and Brady were/are extraordinary quarterbacks. However, it can be argued that there is also a certain "McCarron effect" here as well. When you have a consistently strong defense at your back, you can afford to be highly efficient and resist the temptation to make risky, gunslinger-like throws a la Marino or Favre.