Snobbery 101: Back to Those Old College Grades

When Dowd trashes Perry and Bush (why not quote the hardly impressive Kerry record?), she is arguing that long ago college records and scores are a good barometer of presidential success (that is dubious if one were to compare a Lincoln or Truman to Wilson or Carter), and, by inference, that the current president is also apparent proof. But does she have inside information about the Obama undergraduate record at Occidental and Columbia? If not, why not, given the supposed importance of undergraduate grades to liberal observers? I suppose we are to conclude that supposedly poor students like a Perry or Bush released their grades or had them leaked, but brilliant undergraduates earning top slots at Harvard Law have no need to release obviously straight-A transcripts and no worry that anyone would care?