Trying to find out what they could have done.
Original score (before last change): About 97.350. Total reviews: 32
New score: 97.613. Total reviews: 31
Now, if they change Cubed back to 9.9 from 9.0, you get 97.63125.
If you now subtract a 98 point score, you get 97.6193 (etc)
So if the original score was around 97.340 this could be what happened.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS