Just curious, how often have you had these in New Haven?
I live in Buffalo and I travel down to New Haven often and I always stop in at both unless I must have a Zuppardi's fresh clam pizza.
I can easily see someone going to both on any given day and rating Pepe's well ahead of Sally's.
But if you go there regularly, the rating of both should be reversed. Pepe's is the more inconsistent of the two, though Sally's is inconsistent as well.
My family thinks I'm crazy because sometimes I walk in just to see if I can recognize some of the older crew making pizza. If I see only 20-somethings making it, I turn around and go to the other. If I see the long time pizza guy at Sally's in the back, I will always choose that #1 even if Pepe has their best people there.