Nick the bartender is an interesting character.
We see two sides of him. The nice side of him lives in Bedford Falls. He cares about his customers. He takes care of them. He encourages them to stop drinking. He throws out the fighters and cares for the injured. We see his heart and his compassion. We like this Nick.
Pottersville Nick mocks homeless drunks and religion. In short, he is a bully.
I'll take Bedford Falls Nick any day.