One would've thought that GF paying for flights and hotel during the selection process is a good incentive for them to get people through, or is that just to much of common sense for an airline company?
If an applicant is successful at their assessment, then they are usually offered a job, but they must satisfy the required criteria and achieve the necessary standards required during the assessment period. Anybody can write a good curriculum vitae, so no getting a ticket and hotel room does not gurantee a job I'm afraid.