this is just IMO.
with games like lost odyssey and blue dragon and eternal sonata hitting the xbox 360.. it will infact boom sales in japan.
see the problem with xbox is that its TO AMERICAN.. far to little RPG titles.. i my self LOVE rpg's and im excited for these titles and also Two worlds.
japan players are not so much in to these boring shoot em ups but now we are bringing out these hot titles i think they will buy xbox 360's to actually play these games.. i really can see it happeneing.
EDIT- dont forget that its mistwalkers who made blue dragon and lost odyssey and both are exclusives to the 360..
for those of you that dont know, tho im sure many of you would lie!! mistwalkers are the original founders of final fantasy... they know what they are doing when it comes to RPG..