Well in a way, I can see why the BCS pundits are trying to devalue the RPI. It is one of the better indicators of SOS and winning percentage, but it still is deeply flawed at times. Yes, ISU's bottom feeders may be less bad than UNI's, but again, UNI is the team that played games against the BCS, not ISU. And that's what will matter the most come selection time. In other words, the whole body of work, not just who they played at the bottom.
ISU has played just as many BCS schools to date as UNI.
ISU and UNI both played Louisville. UNI on a Neutral court and ISU @ Louisville.
ISU played Northwestern (7-3 rpi 69) on a Neutral Court.
UNI played Stanford (6-3 rpi 92) on a Neutral Court.