He was clearly joking/being sarcastic.
Nah, I'm serious. But I may be just a little biased because I am from Frankfurt myself. I have been to a lot of cities, but I just like Frankfurt best. Mainly because of the hessian culture. (Is that correct? I don't know the translation for "hessisch", Goolge said hessian xP). There is even a building that looks like a glass you use for drinking apple wine. People just call it "Geripptes". I love that. We also have the best food! Franfurter Grüne Sauce is the best meal that was ever invented. Period.
I know I might be in the minority, but I still like Frankfurt a lot. =P
Official member of VGC's Nintendo family, approved by the one and only RolStoppable. I feel honored.