That ISN'T what I am talking about lol there is another method to it....which literally relies on luck.
There is one sure fire way but it takes forever.
And then there is what I am talking about but that gives me a very slim chance of winning.
I have a fool proof method of winning in each Generation. I'll go ahead and just state them:
Gold/Silver/Crystal:
Wobuffet easily loses. Mewtwo upping his stats with Curse and hitting with Submission or using Substitute and then proceeding to kill it with Hidden Power Bug. Wobuffet can't even encore Substitute or Curse lol.
Ruby/Sapphire/Emerald:
Mewtwo has many ways to beat Wobuffet. It can first use Substitute, then Calm Mind until it is strong enough, and hit it with Ice Beam or whatever attack. Even if Wobuffet lives the attack and breaks his substitute, Mewtwo can just do it again or if necessary use Substitute again.
Mewtwo can also Use Calm Mind/Bulk Up from the getgo. Even if you encore him, he'll still get his stats maxed and will kill you with his attack.
Mewtwo can also Taunt Wobuffet, rendering it practically useless while Mewtwo either sets up or kills it while it uses struggle.
Diamond/Pear/Platinum:
Same thing as Ruby and Sapphire. Taunt, Set up with Calm Mind or Bulk Up, Substitute, etc.