Look at it from the recruiters' angle. Let's say they have 500 applicants and 20 vacancies. Of the best 100 candidates, hours, age, ATPL subjects passed, unrestricted medical etc puts them all about equal. The shrinks have a look inside their heads to decide who to pass on to the simulator guys. Say 75 are left. The simulator sorts out those with two left feet. Of the original 500, now 50 are left.
25 of those 50 have tertiary qualifications and 25 have basic high school. The final interview ties up a couple of very busy and highly-paid senior management pilots for 45 minutes per candidate.
Who do you think gets invited to the final interview for those 20 jobs?