I know the set-up, but I don't know the size/scope of the majority of the teams in the second tier. From what I know of those promoted to the Bundesliga, I'll stick with my 'minor league' judgement. Its a different kettle of fish in England, with teams in the third tier regularly pulling 10,000+ fans per week, and some pulling more than double that - I think there's a sharper drop-off in most European countries.