DQIX is at 4.6 million vs 5.7 million for FFXII (PS3 + 360). Due to the nature of the DS, DQIX sales should have much better legs. I don't know if it will pass FFXII but the mere fact that it is competitive is amazing considering how much hype and development time went into FFXIII. DQIX will be the best selling of the series.
Anyone can guess. It takes no effort to throw out lots of predictions and have some of them be correct. You are not and wiser or better for having your guesses be right. Even a blind man can hit the bullseye.










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