^In this case "Other" only contained Guitar Hero/Rock Band titles... for this sample of the 25 top sellers you can rename it "Music/Rhythm" in your mind.
As to your hypothesis, it's probably true, but you're probably mixing up cause and effect. Id est: the very different distribution of consoles between Others and America is more likely an effect of the genre preferences, rather than a cause of the difference in attach rates (Japan is a different story, for cultural aversion against foreign products and image problems of the Xbox users)







