We all know that the Bizarro Jerry (Kevin) is the opposite of Jerry, and each of our heroes has his own 'opposite'. There are at least 15 instances where we see the differences played out in the episode. Name them.
I'll start you off. The first difference between the 2 'groups' was the great idea that Feldman had, but he didn't consider acting on it. Obviously, this is a dig at Kramer who comes up with the outlandish ideas, and he tries to carry them out.