Not being on a mixed SS and airline cadet course i can't really comment on the supposed prioritisation on the airline boys vs. the ss guys. However on my SS course i saw no evidence of other courses taking priority over us.
I feel the school do a fair job in getting people interviews, not an amazing job but a fair job. They never claim they will get people jobs, the best they can do is provide interview chances. It's then up to the individual. Also, just cause FTE or any other FTO have "contacts" doesn't mean you shouldn't apply to every other possible job. You have to help yourself in this industry.
I'm sure OAT and Cabair offer similar opportunities to all thier students although i have heard airline cadets at OAT do get some priority. Maybe an OAT grad could provide some insight into this.
With a lot of luck and a lot of money the jobs are out there.