There is a lot of MCC/CRM crossover - but you don't get 15+ sim hours on a CRM course, so it's all theory.
Yes it does help to get a job - I know first hand that of the guys who did an MCC course at BAE Jerez just before xmas, 50% have got jet jobs already. They directly attribute their success in the sim selection phase of the interview by the airline to the time spent on the MCC.
Lot more expensive than CRM, but as you have to do it why not have it on the CV BEFORE you go for the job?
0034 956 317 800 gets you through to BAE, ask for sales. i know there are some slots in may/june.