Here's the main problem, by the time Final Fantasy XIII comes out in Japan, (estimate - early to mid 2009) it won't make a difference because there won't be any big huge PS3 games coming for it again for a long time (xcept Versus XIII).
The reason I'm saying that is because the odds that another company has started production on a huge PS3 japan-centric game in the last year and are ridiculously slim.
The biggest games that the PS3 will get (that are japan oriented) are the games that started production before the system was released. I highly doubt that a studio would green-light a huge budget game for it at this point (unless it had guaranteed huge international sales)








