Since the late 90's, I have watched little basketball outside of ISU, for lack of time. What I have noticed has been little trend toward rugby ball in the Big 12, the Big 12 tends to give Kansas special treatment, and the rest of the league gets treated in a pretty even-handed fashion. The women's Big 12 is a completely different story. They are allowing mug ball there.
K-State is really the only Big XII team that plays rugby ball and it has cost them in the NCAA Tournament. K-State has had some pretty solid teams in the Tourney but if they get into foul trouble it completely takes them out of their game in a very similar fashion to Big Ten teams.
If you look at the list of recent National Champions like 2012 Kentucky, 2011 UCONN, 2010 Duke, 2009 UNC, 2008 Kansas, 2007 Florida, 2006 Florida, etc... none of these teams played an overly physical style of basketball.