Microbes in the water, age of the ovens.
I saw that place on the food network (or the travel channel?) and the whole tone of the show angered me. First of all, pizza should not be a fight, it is god's gift to the world, we shouldn't be pitting chicago against new york. second, I don't get the deep dish thing. Like, I understand why it's good, don't get me wrong, but to categorically claim (as the owner of Gino's East did) that it's somehow more authentic and better than NY pizza, is just plain crazy talk. There are places in manhattan that do a straight up napolitano pizza better than many places in Italy. More and more places are doing pizza by the meter, and foccaccia, etc. I don't think you can claim that a pizza designed by the purely american aesthetic of excess is more authentic. But that's just me. Just stating an opinion, I really don't want start a crips v. bloods thing.