Just a nitpick, Zoroark only has R5 SpA, & Necturna has R5 Sp. Defence, so there should be no +1.5 to the calcs, though it does not appear to make a difference to the final result. Also, Pwne said on IRC he is not equipping anything.
"Alright Surprise!, time to make one final parting shot!"
Agility (Evade) + Pursuit combo >
N/A (Agility (Evade) + Pursuit combo) >
Flamethrower
IF Agility (Evade) & Pursuit could not be suitably combined,
THEN change your course of action to
Flamethrower >
Flamethrower >
Flamethrower.