This is insane. Can you imagine if Sony didn't allow the DVDs of the movie Sleepers to play on their TVs or DVD players because they didn't want a movie about childhood sexual abuse to be "associated" with their hardware? That sort of thing would never fly in the world of cinema, but it looks like that kind of thought policing is still acceptable in "lesser" art forms like videogames.
This article makes a good point. How dare we say videogames are art if this shit is still going on. Meanwhile in Japan, Nintendo has no problems with 3D lolicon boobs bouncing games on the 3DS.
http://www.destructoid.com/nintendo-wont-allow-the-binding-of-isaac-on-the-3ds-eshop-222917.phtml