want proof?
http://vgchartz.com/swlaunch.php?reg1=All&game1=Castlevania+Judgment+-+Wii®2=All&game2=Castlevania%3A+Dawn+of+Sorrow+-+DS®3=All&game3=Naruto%3A+Clash+of+the+Ninja+Revolution+-+Wii&weeks=100
all games with a similar start..even a great Cv game in there..see how Dawn of Sorrow started much slower? and see how steadily Naruto CoNR sold?
I think it'll sell in between those two...