patience, I think you will find that City Uni also run an MSc in Air Transport Management, which as a stand alone is obviously going to be much cheaper than a course that includes an ATPL.
The course gives the same qualification as the one at Cranfield but the modular system at City is aimed at people who are currently working full time and is particularly suitable for current line pilots as the modular system fits in easily with airline style rosters.
So its up to the individual as to which course fits them best. Costs are very similar and the content is virtually the same at both Unis. Both Unis are well respected.
City also have a new MSc in Safety Management, and for those who do the original MSc in ATM they may add the Safety Management modules at reduced cost to give them a Diploma in Safety Management in addition to their MSc in Air Transport Management.
I don't think the MSc is really aimed at people who are already "hard nosed managers" but more at those pilots who are looking to the future and want to equip themselves with management skills, should the opportunity arise in an airline, or to "insure" themselves with skills should they ever lose their medical.
The majority of those on the MSc course at City are current line pilots, plus there are some engineers, ATCers and a few others.
The entry for the MSc is an ATPL or a degree.