No, the currency exchange has nothing to do with this. It's the fact that SE has no idea how to make a reasonably sized/costed project and spends years on a single game with the added bonus that they don't work with localization teams until the game is pretty much done instead of getting the script translated asap.
Also, I find it stupendously funny to see people suggesting that the delay for the western version is due to the 360 when SE has never had a simulataneous release of their new, big games in all regions. FF12 had a 7 mo gap, 9 and 10 both had 5 months. That's pretty common, and the US getting it ~6 mo later than Japan is exactly what we would have expected if it was still an exclusive. I can't imagine anyone being so clueless as to believe that the 360 version is causing delays on the US release, but there seem to be plenty of those people nonetheless.
You do not have the right to never be offended.
