Thank you BamBam.
Irishlad - Tui operate a totally different rostering/Crewing philosophy at the moment as far as I know. Their system will always have flights not covered, they pay handsomely for crew to give up their days off to cover those flights. This was shown when it was first introduced to save money in the long run by having less crew in the payroll. I understand that this is now under review.
I am am not going to start to get into any sort of numbers here in public, but I KNOW that your information is presently way off the mark.