Here is a ranking of 2017 NCAA offense by "Football Outsiders"
The S&P+ Ratings are a college football ratings system derived from the play-by-play data of all 800+ of a season's FBS college football games (and 140,000+ plays). S&P+ ratings are based around the core concepts of the Five Factors: efficiency, explosiveness, field position, finishing drives, and turnovers.
We show up just below the middle
https://www.footballoutsiders.com/stats/ncaaoff
Segregating just the Big 12 leaves
1. ou
2. OSU
3. WVU
4. TTU
5. TCU
6. KSU
7. ISU
8. BU
9. UT
10. KU