Seems to be a fake to me. Remember, capital i's look the same as lowercase L's.
Well does anyone have the real Sora on their friend's list? I kind of figured that could be the case but wasn't 100% sure.
ll-Sora-ll (with L's):
Judging from Sora's avatar (if he hasn't ever synced his trophies, it would show none) you are probably right. If he would have posted, it would have that Japanese(?) avatar not a grey face.