IGN gave ToV an 8.2. So they like Eternal Sonata better than Tales of Vesperia? What I've heard from most people is ToV is much better, but it's all opinion I guess... I think reviews on JRPG's are even more worthless than usual.
I'm getting ES either way, once I can find it cheap. I haven't played a new home console JRPG in far too long.