http://ps3.ign.com/articles/923/923711p1.html
For 360, IGN US gave it an 8.3 and IGN AU gave it an 8.5/10
http://www.gamespot.com/ps3/rpg/eternalsonata/review.html
360 version also got a 8.5/10 (they gave BD a 6.0, ToV an 8.5, IU a 6.5 and LO a 7.5)
Both reviews said the game looks better then the 360 version (you would hope so) and that the added story elements, cutscenes and music really flesh out the game and improve the overall quality.