This is an exclusives thread, hence missing Tales of Vesperia, Eternal Sonata and others. But yeah, a lot of the ps3 ones aren't out (or out in the west) yet. Magna Carta 2 is there, at least pic shows for me. Last Remnant should be there, agreed, although the pc version is way better and the 360 one is too burdeneted with its technical flaws.
Strategy JRPGs are still JRPGs, they are just way more niche. Haven't played the last two listed for the 360 though, but from what people say they pretty much suck, which is very different for Valkyria Chronicles and Disgaea 3.
The 360 is nowhere the JRPG king it used to be, partly because quite a bit has been ported and partly because what hasn't been is getting old, save for Magna Carta 2 (which still might get ported) and Star Ocean 4.