Why does LEGO Star Wars III: The Clone Wars have different ESRB ratings between the DS and 3DS?

What's the deal regarding ESRB ratings of LEGO Star Wars III: The Clone Wars in the DS and 3DS formats? I ask, because I need an explanation that can get this game past a picky mom of a <10 kid.

The DS version shows as a "E" rating.

The 3DS version shows an "E 10+" rating.

The links above both say "Cartoon Violence" and "Comic Mischief", and I can't imagine that there is any real difference. I saw this game in a store, and I was certain that it said "Cartoon Violence" and "Crude Humor".

Solution 1:

The ESRB site lists summaries for the titles they rate. There are differences in the descriptions of the game for each platform (3DS, DS, PSP, Windows PC, PlayStation 3, Xbox 360, Wii); specifically, the 3DS version includes:

Laser sounds, large explosions, and battle cries can be heard during the sometimes frenetic combat;

while the DS version doesn't.