When Final Fantasy XIII hits U.S. shores in March, it'll have a different theme song than its Japanese counterpart. Leona Lewis' "My Hands" is the official anthem for the North American and European releases while Sayuri Sugawara serenades players of the already-released Japanese version with "Kimi ga Iru Kara" ("Because You're Here").
As far as which song is better, can any sane person make a case for Leona? Her song doesn't seem to fit the game at all. To even the scales, Ms. Sugawara should've been allowed to sing "I See You" for the Japanese print of Avatar.