Whats the deference between Nike and Gatsby?

This is an extremely difficult question, but I'd say that it's difficult to call either Gatsby or Nick morally upstanding.

Nick ultimately realizes that he has no place in West Egg or in New York, in the callous, judgmental, and fast-moving East; unfortunately, we have to wonder if he can really go back home again, after seeing what he has seen. Though he used to believe that you couldn’t turn back the clock and return to the past, Nick’s perspective has changed: his neighbor Gatsby is gone. Tom and Daisy are gone. Jordan Baker is gone. Nick's greatest fear – that he will be alone – has come true.