rekna, i didn't read anything in the portion you cited that alluded to any sort of waiting list. where did you pull that from?
also, the pilot aptitude test isn't the only criteria with which pilot candidates are selected. physical fitness and conditioning eliminate many candidates who are otherwise highly qualified. GPA, educational background and other factors round out the many criteria used for pilot evaluation.
this was a time of war anyway... i'm doubting that the competition was high or the demand that low.