Ok, 1st, Final Fantasy will not be released in the West before 2010 (being very very optimistic Nov 2009), by that time we don't know how the market has been splitted, we obviously know Japan (SO4 won't change things there), but in the US and Others the PS3 is still without a shot in selling a JRPG... So i prefer to wait and see which is the best JRPG seller in the West...
My prediction is that without looking at future JRPG sales, the PS3 has the advantage because of Europe, Advent Children/FFXIIIDemo and VersusXIII, anyway the winner won't see a huge difference in sales in the West (Japan will put the big difference because of the PS3 exclusivity)...







