OH! let's compare to GT series! The best GT has 2.5M out of 20M so that is 12.5 % well, 13 if you are nice.
Let's compare to that!
There are 17 games on the N64 that beats the GT series in attachment rate!
There are 12 games on the GC that beats any of the GT series in attachment rate!
On WII there are currently 5 games better.
NOW, we go by XB attachment rate in JAPAN.
2 games on the original XB > all on Sony platforms ever.
PWNAGE CONFIRMED!!!!
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS