User blog comment:Argorrath/Treyarch releases a BO2 teaser video called "Origins" for DLC 4/@comment-1263839-20130808151749/@comment-173.58.53.40-20130808202944

the "God forsaken picture" will be posted as many times as needed.

And yes, it is true that Dempsey looks like Mason, and that Nikolai looks like Reznov. It's either placeholders, or intentional.