This year, the Broncos averaged 37.9 points per game, 14.5 points more than league average. Seattle, meanwhile, allowed just 14.4 points per game, 9.0 points better than league average. That means this is a true clash of the titans in one sense: when the Broncos offense is on the field against the Seattle defense, the two units will have been a combined 23.4 (difference due to rounding) points better than average during the regular season.

As it turns out, that’s the greatest disparity between any two units in Super Bowl history. One nice aspect of comparing a team’s offense to an opponent’s defense is that you don’t need to adjust for era, since a high (or low) scoring environment will equally help and hurt each pairing. You can simply subtract Seattle’s 14.4 PPG average from Denver’s 37.9 PPG average to get that same 23.4 PPG difference. The table below shows the differential between each team offense and opposing defense — measured by points scored and points allowed per game — for each of the 48 Super Bowls. That means the Denver/Seattle battle will replace Super Bowl I for the greatest offense/defense showdown in Super Bowl history.

Here’s how to read the table below. In 1966, the Kansas City offense faced the Green Bay defense in Super Bowl I (hyperlinked to the boxscore at PFR). The Chiefs quarterback was Len Dawson, and Kansas City averaged 32 points per game that year. Meanwhile, the Packers allowed only 11.6 points per game, providing a difference of 20.4 points. In Super Bowl I, however, the Chiefs lost to the Packers, 35-10. This is the first time since Super Bowl XXV that the number one scoring offense is facing the number one ranked scoring defense, but frankly, the Bills/Giants showdown pales in comparison to this one. The difference there was nearly ten points narrower than the Denver/Seattle disparity.

With 48 Super Bowls, that means there are 96 offense vs. defense matchups. And while the Denver offense against the Seattle defense ranks #1, the Seattle offense against the Denver defense ranks…. 95th.

Update: In fact, the 23.4 PPG difference is the largest in any game, regular or postseason, since 1950.