There's a lot to that question and I don't feel like looking anything up, but the nice thing with USC, UCLA and Stanford is that you can rest assured they haven't played an FCS team, because none of those teams will ever schedule one of those. Pac12 only play 3 OOC teams because of the conference schedule, I don't know much about Big12 schools. Top of my head I can only recall Stanford losing to Northwestern, Oregon losing to Mich St, Utah beating Michigan, ASU losing to Texas A&M, USC losing to Notre Dame, Cal beating Texas...you get the gist.
Conference cronies are weird people, usually employed (as suggested) by someone who makes money by pimping the conference. Hell I don't even know who a good team is this year, so trying to claim that beating a good seems a worthless argument, and losing to a bad team is barely an argument, but that's what I'm sticking to.