A total of 635,000 tons of bombs, including 32,557 tons of napalm, were dropped on Korea. By comparison, the U.S. dropped 1.6 million tons in the European theater and 500,000 tons in the Pacific theater during all of World War II (including 160,000 on Japan).
…yea.
Also consider the fact that north Korea is roughly the size of Maine and Japan is roughly the size of the east coast.