The Disaster in Japan, How We Can All Help

And yet, still no one has answered me how Nexon can be the bad person here when Blizzard, who makes BILLIONS(if not then pretty close to it) each year, hasn't donated a single cent.

Not donating doesn't put you in the wrong. It's not their obligation. What Nexon did, however, was donate, but also try to take advantage of the situation by turning it into a business opportunity.