'Getting stressed in "the city" is not the same as dealing with depressurisation at 35,000 feet, or something similar'.
Medically true! Long term extreme stress can kill, but short episodes appears not to have significant risks in the fit person ie pilot. Only in films do fit people keel over with heart attacks.
So I would suggest that the two jobs from this perspective are similar with the city job being a higher risk and if someone can cope in the city they will be fine in the cockpit.