Actually, for the 100 OTK those were 7 card OTKs.
The 200 Card OTK, was more of the idea, of being able to do massive damage from a single source.
In reality, the play would be to buff the weapon, ahead of time, and plop down down the SoFrs ahead of time, doing up to 38 unblockable damage a turn, and even against a player, that's 3 turns to death, and even if they have have three SoD's played and a bunch of Feral Bonds you could still punch through with a 200 OTK.