If it has a very good head, not sure the tail matters too much. I think the tail will also be influenced by word of mouth, as well as how well stocked N-B keeps stores. I have yet to see much marketing for the game, so much will depend on that word of mouth.
I'm surprised they didn't at least create a commercial that could play on the Studio Ghibli participation. Oh well. I know I'll be getting the game, and all I can do is hope that enough people do to warrant more games similar to this, even if it's not directly related to this game.