Most Japanese don't like jrpgs being on the 360. Look how Square's best console game to date in a while SO4 faired in comparison to WKC and Demon's Soul on PS3 as far as sales go. Now that the PS3 outnumbers the 360 3:1 in Japan and the Wii much more than that even, you will begin to see more jrpgs headed to PS3 and Wii and much fewer headed to 360 which is probably why at this time last year MS had a big conference to announce all the jrpgs headed to the system during the year while this year there have only been some rumours that Lost Odyssey II might be coming out.
Finally, the fact that DQX is a Wii exclusive and the PS3 has two FF exclusives at least in Japan makes things even harder for the 360 to excell at this genre in the future (and judging from both sales and review scores for jrpgs already on 360, it is debatable that they have ever excelled in this genre).
One thing that could help the 360 out here would be if they could get Kingdom Hearts 3 as an exclusive on the 360, but with its reputation as the console of choice for shooters and the most violent games would Disney and / or Square really think of the 360 as their first choice for KH3? I doubt it unless some money was talking somewhere.
Heavens to Murgatoids.
