I the training is airline specific does it mean the initial part of the training will be generic i.e done on an fnpt2 or a similar sim then the latter stages on a category d sim of the particular aircraft the airline wants you to fly. The fnpt2 can be used to learn basic tracking as of ndbs, vors etc then the emrgency procedures and and company sops in the latter stages on a category d sim which is a lot more expensive.
The initial part can be used to weed out those who may not be able to complete the course.