When you say it will drop slightly faster, is that compared to its initial sales? So MKWii drops 35% from year one to two, while MKDS drops 25% (ignore the numbers, they're made up).
Or do you mean that MKWii's 3rd year will be smaller than MKDS 3rd year?
Because MKDS actually saw pretty steep drops from year 1 to 2.
First 52 weeks: 5.45M
Next 52 weeks: 2.6M
Next 52 weeks: 4M
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







