User blog comment:Dodo8/GTA V - Gameplay or Fake (Looks terribly genuine but I still don't believe it)/@comment-4200418-20120720225412/@comment-2121257-20120720233138

They are. If you check the accounts in the comments, you'll notice that they were all registered on the same day. You'll also notice that was the ONLY video they commented on, except "91gamermad" and "drfifa90", but there is no reason to say those aren't sockpuppets of the same user.