I don't know, Dubai is...bigger, but I'd say it's vastly more mediocre city than Rome. To your original point, making things easier to make probably does exert downward pressure on quality in the aesthetic/artistic sense. Dubai might have taller buildings and better sewage system[0], but it will never have the soul of a place like Rome.

[0] Given the floods I saw recently, I'm not even sure this is even true.