It is tracking way over NSMB in Japan? I always thought that 2.797M was more than 0.877. (source: http://vgchartz.com/swlaunch.php?reg1=Japan&game1=New+Super+Mario+Bros+-+DS®2=Japan&game2=Super+Mario+Galaxy+-+Wii®3=Japan&game3=&weeks=20)
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS