Philly phood is underrated, yes. But have you never been to Chicago? Deep dish isn't my thing but at least it is of a place. And the food scene from "bottom" to top is tremendous. Italian beef? Proper Chicago dog? Polish, Ukranian, Greek all hang with Queens and Brooklyn renditions. Super elevated pub food, the Billy Goat. Girl and the Goat. On and on. I gotta put the Chi at a strong 2 behind NYC and then Philly. Also, DC is a whole lot better than it was in '99 or '04, to pick 2 random years. Finally, I really like RI clam chowder.
Edit: Playing the picky, picky game means 'Nova is, well, in Villanova. DC has the crabs.