Filing Jointly Vs Separately (High Income)

Hi -- pretty sure I am doing this correctly but looking for confirmation.   If a husband and wife each have a high income (let's say 500k each as an example), then I do not think there's any difference in married filing separately vs married filing jointly for federal -- is that correct?  I was surprised to get the same answer when doing it both ways but then when I looked at the tables, that does seem to be the case.  (While it doesn't make a difference for Federal, It makes a difference in NY and its more advantageous to file separately)