[gehatare]

Outside of Manhattan this is unlikely, Paris is much denser than NYC and the difference in GDP or however you want to measure economic productivity is too small to make much of a difference.

[brianwawok]

Google puts NY GDP at 1.75T, and Paris GDP at 785M (in USD).

So more than double?

[pchristensen]

NY metro population is 18.3 million, Paris 12.3 million. So NY's per-capita is about 50% higher.