Doesn't surprise me in the least. I bought it last Friday and completed it yesterday, but it's clearly not everyone's cup of tea, and doesn't seem like the kind of game that Nintendo's main demographic would buy. If it was a 360 or PS3 release, you might have a different story.

Plus, those who normally would buy it might be put off by inconsistent reviews, citing linear gameplay and hammy cutscenes as reasons to avoid.