Considering that the video's description actually says that the Pokemon were obtained via "gamescharkcheats," I doubt this has any validity for actual play. At best, it's a freak accident that occured due to an anomaly in how the sharked Pokemon's data was created. At worst, the video itself is fake.

Though it is a little funny, it's not that great for those of us who have been through Mewthree and other rumors.