Heavy Rain US Boxart

[セフィロス]

We’re also able to confirm Heavy Rain’s final ESRB rating has come in at a strong M for Blood, Intense Violence, Nudity, Sexual Content, Strong Language and Use of Drugs. And for those of you who have asked, the content is exactly the same as what’s being released in all our territories, so you’ll get to enjoy it exactly as Quantic Dream intended.

http://blog.us.playstation.com/2010/01/introducing-the-official-heavy-rain-box-art/

So its not getting cut or any other shit, it'll be the same content as all regions.