I think that is a blatant oversimplification, and additionally, that principle has been shown to not apply many times in the past (such as games selling poorly despite droughts). MK8 sold largely on its own merits, and due to the promotional offers offered alongside it. There may have been a small boost due to the fact that there weren't many games offered near it (although saying there were no games is misrepresenting Wii U's game lineup), however, that was not the primary factor in sales...







