I thought Genpatsu-kun was better. Only because Nuclear Boy had this realistic image of an actual human child. The narrators' tone of voice sort of disturbed me as well so I sort of really didn't like this video (lol).
If this is aimed towards little kids I think it'll frighten them rather than entertain/teach them. Though it is pretty amazing that foreigners would go through so much trouble to explain the situation going on in Japan to its own people.
