Something I learnt from my Air Force days. When I was on pilot's course I assumed there was a 50% failure rate. When I became an instructor I learnt that we wanted to pass everyone but 50% manage to fail themselves. Keep that in mind!
CX wouldn't bother to invite you for a 2nd interview if they didn't want you. From some of my ex-interviewer friends...don't be defensive...dont' blame others for life's misshaps. Have a sense of humour....accept that you are neither the best or worst pilot that has ever lived! The sim....interestingly it appears that improvement is more important than performance.
Look, just remember that CX wants pilots....you want a job....keep it simple and you will get the job.
good luck