Kind of useless in isolation. Who knows how competitive the CS classes are at the places they were rejected. I mean CS is probably the most competitive of any Major currently and they were rejected from arguably the top undergrad programs in the world. Out of state students are also at a disadvantage so that didn't help their case. Also seemed to lack any CS related extra curriculars, when they're applying against kids who won IOC's or have been building software since they were 12. Probably would have done fine applying to USC, Duke, JHU and other elite privates or in any other major.
