Quoted By:
Calm Lugia does pretty well, ice beam doesnt do a lot, you can toxic stall and whirlwind his ass away if the tries to set up
Ghost Arceus does decent against most mewtwo.
Those are probably the two only "counters"
everything else Mewtwo can probably beat 1v1
Scarf Genesect is so NOT a mewtwo counter, you can't switch into most mewtwo moves more than once, and if you switch into fireblast its game over. Psystrike still puts a huge dent in genesect
