This is a 'scorecard' by conference for 2004, the 6-th for the 64-team playoff system where every conference gets an automatic bid. You can find the full results elsewhere.
My original motivation for this summary was the thought that the regionals are a major source of inter-conference and inter-region play that helps one evaluate the relative strength and (possibly) future seedings of teams from various regions and conferences.
Current status: Super Regionals are complete.
Here is the 'histogram' of the success rate for the 2004 NCAA regionals.
I tally a Regional champion under "win" and the Super-Regional champion (the team that goes to the CWS) under "champ" so the "champ" column is unchanged from the older 48-team system.
------ wins ------
Conference Number 0 1 2+ win champ comments
========== ====== === === === === ===== -----------------
SEC 9 1 2 2 4 3/4 in, 6 in top 16!
Big-12 6 3 1 1 1 only half ?
ACC 6 1 3 2 2 in top 16, and gone
Pac-10 5 1 3 1 half is about right
Conf USA 4 2 2 very solid
Big West 3 1 1 1 strong showing
Atlantic Sun 2 2 beat ACC+Big12 champs!
Big East 2 1 1 .
Southern 2 1 1 .
Colonial 2 1 1 .
SunBelt 2 1 1 worth two bids?
Big South 2 1 1 " " "
independent 1 1 semper? Miami (ACC)
WAC 1 1 .
Mo-Valley 1 1 .
West Coast AC 1 1 .
Mid-Continent 1 1 .
Ivy 1 1 beat the ACC!
MAC 1 1 .
SWAC 1 1 SWAC beats N1 seed!
America East 1 1 .
Atlantic-10 1 1 .
Big Ten 1 1 .
Horizon 1 1 .
Metro Atlantic 1 1 .
MEAC 1 1 .
Southland 1 1 .
Mountain West 1 1 .
Northeast 1 1 .
Ohio Valley 1 1 .
Patriot 1 1 .