Those that say OU's players could not play for major and mid-major teams are way off base. It is not a complete lack of talent that is hurting this team it is a lack of players. OU is essentially 3 scholarships short this year and may have one or two kids that were takent simply because OU did not have enough bodies but even those kids could certainly be on a mid-major roster. The people buying into this nonsense are comparing OU's players to the best major teams and mid-major teams, not the entire universe of major and mid-major teams. Consider these major programs:
Rutgers, Villanova, Pittsburgh, St. Johns, DePaul, Providence (this is the bottom of the Big East), Arkansas, Alabama, Mississippi, LSU, Auburn, Georgia, South Carolina (this is the bottom of the SEC starting with Arkansas and OU beat them), Iowa, Penn State, Nebraska (bottom of the Big Ten), Clemson, Georgia Tech, Wakeforest, Virginia Tech, Boston College (bottom of the ACC), Washington State, USC, Oregon State, Arizona State (bottom of the Pac 12 and CU is 4th place in that conference), Texas Tech, A&M, KSU (bottom of Big XII and KSU which OU swept). That is 27 major teams that would gladly take players like Grooms, Clark, Pledger, Fitzgerald and Osby and would likely take Blair and Neal.
If you go to mid-majors you get teams like this: East Carolina, Houston, SMU, Tulane (bottom on Con. USA), Charollet, George Washington, Richmond, Fordham, Rhode Island (bottom of Atlantic Ten), Youngstown State, Ill Chicago, Green Bay, Wright State, Loyola Chicago (Horrizon - Butler's conference), Towson, Hofstra, William & Mary, James Madison, NC Wilmington (Colonial - VCU and George Mason's conference), San Diego, Portland, Pepperdine, Santa Clara (West Coast Confernece - Gonzaga and St. Mary's conference). Conference USA, the Atlantic Ten, Butler, VCU, George Mason, Gonzaga and St. Mary's are perhaps the best examples of mid-majors in the last several years. The individual teams I named have all had some success in the NCAA Tournament as mid-majors.
OU has some problems and the particular group of players OU has may not work well together but they are clearly mid-major and above level talent. To suggest otherwise is simply not accurate. Every team I identified is clearly playing in a major or mid-major conference. You could probably take a bunch of teams from other conferences and call them mid-majors too (such as the Missouri Valley, MAC, Patriot, WAC, and Mountain West).
Minor conferences are conferences like the SWAC, Summit, Atlantic Sun, Southern, etc.