@Kamil
I welcome you to do that. Prove that it has a big difference, I won't bother. I believe gives close to the same result, and it takes a hear piece only im time time. If you want to do 100 % accurate, sure do it. But untill then, I don't believe I'm a lot wrong.
Now I started repeating myself... Bad sign...
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS