Who said don't trust any statistics you did not make up yourself? I am not sure we are comparing like with like when we talk about megapolis airports. Frankfurt (not Munich) benefits from an excellent internodal transport system. The train feeds passengers from an impressively large catchment area.
A lot of people in Germany think the EU is picking on Lufthansa. But frankly I think hub dominance, particularly when a number of other companies are likely to come out of this significantly weakened, is a fair subject of public interest. Big companies are getting a lot of support (e.g. BASF in the UK getting effectively over a million euros per employee according to today's Times newspaper) while small companies are struggling.