Didn't the Japanese version have a different song, though? That almost makes it like it's just a fan music video and you choose some song about the characters.

Of course, it's good that there is some correlation between the song and some aspect of the story, but can't the same be said for anime music videos or other fan videos where people play videos from the game and choose a song important to them? You can't necessarily say that about Eyes On Me or Melodies of Life considering how tied into the story they were. If Leona Lewis wrote the song for the game and it was something that Serah sang or wrote for Snow, then it would have a lot more meaning to me.