This ESRB "leak" could just as easily be a "mistake". And it's true, Eternal Sonata was never touted as a 360 exclusive. But there have been no announcements about it cross-platforming, and, surprisingly, no rumors about it coming to PS3 either. The only thing that existed was the ESRB thing, and it's gone now. It's tough being a neutral fan on this site, gebx!
Threads of Interest:
The Movie Thread: http://www.vgchartz.com/forum/thread.php?id=6880
The Crow Eating Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=3886
The Betting Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=7104
Custom GIFs Thread: http://www.vgchartz.com/forum/thread.php?id=18963
The Greatest Game Ever Conceived On Any Platform
Tag: "I have tasted Obi-Wan's bitter tears"