Two things come to mind. First, building these games is an iterative process, and that can be two versions of the map in progress.
What exact differences irk you in this case? The lighting?, the missing pipe; the moved lamp post?
The other thing it could be is deliberate differences. While I don't actually know it ~of course, would it not behoove them well, to have slightly different versions that go to different press & industry partners; and so put a name to the original leak when it occurs?
(Real world map makers used to actually put fake towns or landmarks towns on their maps to catch rivals that copied their maps to sell, instead of making their own; and it worked. They would catch them and take them to court with iron-clad proof.)
Either way I do see it; the lighting and clutter is far less complex. My guess is with them having to scale it back... They have a nasty habit of pairing back the visuals to match the console limitations. They do this for consistency sake, and they may have had to change the map for console performance reasons.
