Mewtwo: Psycho Cut vs Confusion

I prefer Confusion's DPS
Hopefully will get one of each ;P

Psycho Cut/Shadow Ball would be the better moveset for using against other psychic pokemon.

Since Gengar is part poison (weak to psychic), Confusion will also be super effective. Confusion is better, but the difference is smaller.

https://www.pokebattler.com/raids

Mewtwo is the best generalist attacker in the game, Confusion DPS is crucial in that, also is the best DPS STAB move Mew2 can learn, really you only want Psycho Cut against psychic mons, cuz C damage won't be relevant, and PC EPS will be

The thing you want for Psycho Cut is to get one more charge move off.