I am going to assume you haven't read the rest of what I wrote.
Do you know what percentage of people own a nintendo DS? Even if 25% of Americans own a DS, 75% of Americans don't have access to "Super Mario 3D Land".
The game is already made, porting it over is a simple process and it's a way to get the rest of the people who don't own a DS their product.
Does it not make sense? Do you and other understand what I am saying? I feel like I am talking to a brick wall.

And $4.99 for a digital download (minus Apple fees) is better than ZERO that they are getting now.