The Last Story => Never played but I heard it is mixed with some great things and some annoying flaws.
Resonance of Fate => A very interesting jrpg, with innovative gameplay, but the story is somewhat confusing.
Star Ocean: The Last Hope (Is there a difference between PS3 and 360 versions?) => Minor differences between the 2, if you played the 360 version you can skip the ps3, otherwise it is a solid jrpg in many aspects.
Eternal Sonata (Difference between PS3 and 360 versions?) => Lots of improvement in the ps3 version, and I think you should play it, for an early 7th gen game it is beautiful both visually and musically, gameplay is great, and story is charming.
Pandora's Tower => Never played, but heard it is a good experience
FF XIII-2 => not yet played, if you liked 13 I think you should play its sequel.
Hyperdimension Neptunia => Seriously I think you can rid of that game.
White Knight Chronicles 2 => Better than the first one in every aspect, I recommend it if you appreciate the first.
Bue Dragon => don't know.
Rune Factory Frontier => Rune series is a particular type of jrpg, unless you love sim games, you can skip this one.
Rune Factory: Tides of Destiny => same as above.