Armored Mewtwo is for the Hyper League

It's one of the top threats in the Hyper League. Virizion, Armored Mewtwo, and Giratina (Origin Forme) are also good for the Hyper League. In Battle League, unlike regular Pokémon, it's better to have lower Attack and higher Defense and HP. Catching Armored Mewtwo isn't the end; you need to trade it with other users or your alternate accounts to lower its stats. If you primarily play Raids, I recommend catching various Mega Pokémon, including Mewtwo X and Y.