Here are the FBS’s 10 conferences, ranked by average SP+:
1. SEC: 11.7 average SP+ (33.4 average offensive SP+, 21.9 average defensive SP+)
2. Big 12: 11.5 average SP+ (35.7 offense, 24.3 defense)
3. Big Ten: 8.6 average SP+ (28.4 offense, 19.9 defense)
4. Pac-12: 5.1 average SP+ (33.3 offense, 28.2 defense)
5. ACC: 2.3 average SP+ (27.7 offense, 25.4 defense)
6. AAC: 0.7 average SP+ (30.5 offense, 29.8 defense)
7. Sun Belt: -2.2 average SP+ (25.1 offense, 27.3 defense)
8. Conference USA: -7.4 average SP+ (26.7 offense, 34.2 defense)
9. MWC: -10.8 average SP+ (18.2 offense, 28.9 defense)
10. MAC: -12.2 average SP+ (21.8 offense, 33.8 defense)