I had a Zoroark fight against a Heracross which will transform into the opponent's previous Pokemon Charizard and Supersonic Skystrike the heracross as its the last hope.
Will the Supersonic Skystrike one hit KO the full health Heracross?
The nature of the Zoroark is Naive with Max Attack, SpA and Spe.
The nature of the Heracross is Llonely with the same EV spread as the Zoroark.
Also the Z-Move is transformed from the move Fly.