Interesting thing is that the local paper did do a breakdown of foul disparity in the Big 12 last year to address the very question of favoritism. What did they find? They found that KU was near the bottom of the league in difference between foul shots taken at home vs on the road. They also found that KU was in the middle of the conference for foul shots attempted per game. Per Travis Ford, the OSU head coach, his game plan was to be very physical as he felt that it was necessary to get KU off their game. It almost worked, but his team struggled to play well outside of that phase of their game plan.
As for the Big 12 being overrated, I would agree with that to a certain extent. The RPI and tournament performance are two completely separate things. The RPI says the Big 12 is really good, but past tournament success says they are overrated. I would argue that there are several good coaches in the Big 12 and that allows them to succeed in the non-con, but there isn't nearly enough top level talent to make the conference dangerous in the tournament.
All that said, many of you will keep believing whatever it is you want to believe and will keep accusing KU of receiving gross favoritism game in and out. I'm not a fan of Kentucky basketball, but I respect the success you've had. I have a small $20 bet with a friend on Kentucky going undefeated. Last night looked like the team that just might do that.