Now I never say whats fake and not because I hate being wrong, so I'll just say why it could be fake.
1. It's easy to rename pictures and then stick them into the main file.
2. The graphics.
3. Look at the way all the real loadscreens try and get in as much of the map as they can. These are just small little sections of an area in the "map"
4. How could he have possibly gotten the files? If anything, the files would have come from the xbox due to the fact that Microsoft made a deal with activision which made it so that the xbox 360 would receive all DLC a month earlier than everything else. If Microsoft found out the a different system had DLC on their system before xbox, Treyarch would get the pants sued off of them.
5. In Mp_hotel Why is there no background? It's just gray.