MCC a vital part of training - sorry that is complete and utter rubbish.
If an MCC is so vital why is it necessary to do a CRM course before you start line flying?
An MCC is vital to start an initial type rating course.
Who has failed an MCC course?
As others have said, getting that first job is tough - it took me 3 years. All that my current employer cared about was that I had the certificate to show when I did my type rating.
"Where?" "What sim?" were not questions which were asked.
You ask any pilot employed since the introduction of the JAR and they will all say the same thing about the MCC:
"It was really great fun after the stress of the IR. Yes I did learn from it, but nowhere nearly as much as from my first line flight."