Mr. sickVisionz on 17 January 2010
I say 360 because of its larger install base, the broader appeal of the game, the typical sales performance of multiplat games, the typical sales performance of multiplat JRPGs, and the typical sales performances of games that were traditionally Sony exclusives but now come out on the 360 as well.
All of those factors favor the 360 version. I'm not even sure what else you could logically use as a factor and reach different results.
