I'd say it's quite different. The odds of foraging in anything short term slim (Although Blast could tell you how to find food - and at least where I am in NYC, there are quite a few squirrels, and if I go 1/2 mile, a lot of rabbits, and fish)

During a LOT of "disasters" in the Urban situation, you're really going to be looking at a "How do I get Home?" scenario, and once there, you're either into a more general situtation, or you're like me, and live in the city.

In a few ways, NYC in a disaster is probably better off than many cities. First, we have a VERY large Police and Fire Department, that can throw manpower at a problem like you could not believe, which leads to MOST problems being short term. Another good thing is that NYC's water supply is gravity fed, so a loss of power does NOT lead to a loss of water, UNLESS you live in a building taller than approximately 5-6 stories (where they have to pump the water up to tanks on the roof)