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Which is the best college football conference in 2022?

Analysis

Every FBS team is a dot. Conference averages are not shown, and that is the point: the SEC’s mean is dragged up by four teams, the Big Ten’s spread is twice the Sun Belt’s, and a bar chart of means says none of it. What “compare the conferences” actually asks is how much of one league sits inside the other.

Defense EPA/play allowed · 2022

FBS medianBig TenACCSECFBS IndependentsMountain WestSun BeltMid-AmericanBig 12Conference USAAmerican Athlet…Pac-12

One dot per team, one tick per conference median. Leagues are ordered by median, and the mean is deliberately not shown — four teams drag it and it hides how far the two distributions overlap.

ConferenceTeamsMedianSpreadBest
Big Ten140.0730.140Illinois -0.042
ACC140.1270.057Louisville 0.034
SEC140.1280.118Alabama 0.011
FBS Independents70.1310.059Liberty 0.065
Mountain West120.1370.063Boise State 0.062
Sun Belt140.1440.132Marshall -0.057
Mid-American120.1520.083Toledo 0.092
Big 12100.1580.092Iowa State 0.089
Conference USA110.1670.113Middle Tennessee 0.076
American Athletic110.1860.084Cincinnati 0.057
Pac-12120.2010.068Oregon State 0.086

Two numbers, not one

Median answers “how good is this league”. Spread — the interquartile range — answers “how evenly good”, and it is usually the more interesting of the two. A league with a high median and a huge spread is four contenders and eight teams padding their records, which is exactly the shape that produces a conference champion who keeps losing in January.

Note which metric you are looking at. CORE is opponent-adjusted, so it can be compared across leagues honestly. The raw metrics cannot: a conference that plays itself twelve times has its schedule strength baked into every raw number, which is the single most common way conference comparisons go wrong.