Not sure how much you've played, but to me RG is a game that seems "wow, nice" at the start and then the more you play the more dull it gets and you realise it's more of a tech showpiece than a game with a soul IMO.
Dark Chronicle/Dark Cloud 2 had a lot of charm to it. From the title cinema with the theme song playing, to the likeable main character, to the charming locales and the neat photograph/invention system. Then you had the really enjoyable sim-city like town building which was the most interesting part of the game IMO. RG is just too standard, too plain, with nothing to really distinguish itself from every other action-rpg out there besides "look no loading", which is a great accomplishment, but it's not really what makes a game good.
To me RG is like .Hack except a billion times better than .Hack in graphics, loading, dungeons, and just general execution on the programming side. Yet it's nowhere near as interesting of a story, and has only 1/1 billionth of the creativity that .Hack had.