It seems as though Mr. Iwata is not too happy about Nintendo of America’s lack of Brain Age sales. Here’s what he had to say:

When I received a report from the U.S. that they sold 1 million Pokémon Diamond & Pearl already, I asked them, “why did you sell only 10,000 Brain Age last week, when Europe sold through 30,000?” This is a typical example of how I communicate with our people in the U.S.

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Source: Nintendo