The only one of these that doesn't apply to New Orleans is that it doesn't remain free of ice throughout most of the year. It stays that way ALL year.
As for the rest, it simply illustrates that New Yorkers were better capitalists. Ironic from a bunch of people who keep citing Mises. And yet, despite all that, the south had a higher per capita income (by a good chunk) and most of the richest people in the country.
That, and the fact that it's twice as far away.