There's not much difference between "And the Break-up Scene" and the pilot. Both begin with dumb racial stereotypes punctuated by one-liners consisting mostly of puns. It's pretty awful stuff which doesn't belong on the show but is probably sticking around for a while longer.
Then the second half of the episode rolls around, with Max and Caroline together, interacting, and it's really fun. Kat Dennings and Beth Behrs have amazing chemistry, and despite some iffy lines reminiscent of those in the first half, it ends on a high note. If the writers could get it together, 2 Broke Girls could turn out to be a really good show. But for now the writers are still struggling with the diner aspect of the show and it's holding the show back.