The way the bomb(s) at the end exploded suggests it was most likely a MOAB - Massive Ordinance Air-Burst, or Mother Of All Bombs. It releases a cloud of combustible gas before igniting, creating a vacuum effect that pulverises everything within range.

It wasn't a standard nuke (the fallout of which can stretch for hundreds of miles), nor was it a tactical nuke (which would probably have taken over a quarter of NYC with it). On the other hand, they weren't regular bombs, and the rubble and flash of light wasn't a bomb landing on the bridge (which was in Central Park, Kazilla).

Now both of you STFU with your arguing - it's making my eyes bleed. Any more, and you'll both be having some time out to cool down.