It's the angle of the camera, sorry I have to say this, but it is the angle of the camera, but mostly on our mysterious Zexy look alike movement. He removes the hood, but if you see the scene before he does that, he's standing there looking like a normal org sized person. As for the hair, it covered his right, we can't even see what part of his hair is being covered, and as for the lighting I agree. Not the lighting on the game, but rather the lighting on the video recording, since this is a video recording not an actual ripped trailer....
Vexen, I have to wait for that.. I really can't see Vexen doing that, I still go with my slightly logical rumor about those two which has it's own topic here.
ANd people who want to save internet time of loading apage, alirght I'll just post it anyways.
Besides the fact Zexion only faded out, and Vexen died and ect ect ect.
There is a chance that couldn't be Zexion, but a dopple ganger Organization member? Or it could be Zexion.. I seriously can't say but here's my reason why..
The two new Organization member have appeared, both of them look like old members beside the hair right? There is a chance this is a member that can take form of any member, but keep the hair, maybe to confuse Sora, or maybe there's a chance that the Org member may be Zexion, but as him being the manipulator of memories, he could manipulate Sora's memories to see him as Vexen, even though the hair color might be the same, it just depends if there may be any new trailers, screens of other look alike of org members, it could even be the E.U that has the power to manipulate his form... it's hard to say. But that's my crazy theory, don't flame it please, it's just thinking outside the box.
New stuff to go with this rumor: The deep dive says metamorphise (Typoed it I know) Which says shape shifting, and since N.E.O's well some are able to just move around crazily on their own free will, this could be a fine example of a member doing it.. and since I can practically say every single line used in the Deep Dive is gonna be in the game (Thanks to translations of the new trailer) I can now say something about metamophises is going to be in there.