Notice two things:
1. Jack is still maintaining the crusade against Rockstar, even though he's lost /every/ case against them, making 3 in total since the release of Bully.
2. He admits he owns a copy of Mortal Kombat: Armageddon. It isn't said in the video but I read in an interview that he does have a copy of the game. (His likeness is pictured in it)