So to sum it up: If I would target Management Consulting (tier1/tier2) for Financial Services Companies you would think that Frankfurt School of Finance and Management would be able to place me there?
The school would probably be able to connect you with the kinds of firms you're looking at, but without knowing more about your background and work history it's not clear whether they would want to hire you.
If you don't already have a fluent command of the German language, I'd say the chances of landing a job in Germany - most any post-MBA job - start to decline. Beyond that, this kind of firm will be interested in what specific skills and expertise you bring to the table, beyond what an MBA would provide.
I tend to agree with Duncan - that a German-language degree, preferably in or near the cities where you want to work - is probably a better idea.