The Energon Pub

Badass Decepticon leader takes on the combiner strong enough to lift his entire space ship. Who would win 1 on 1? If it was Scorponok against 6 Seacons?

I think Scorponok in both cases, he's pretty close in level to full power Megatron.

having looked up the stats, and going just by the numbers:

Piranacon has the firepower, but Scorponok has it everywhere else, so the headmaster wins.

skorponok all the way

Scorponok is bigger and stronger. Piranacon could batter S with beams and blows but S would hit him with anti-gravity so he floats upwards. S's tail would zap P with great power. The claws would tear P to pieces. Afterwards, S would suffer a bit because P shot him with corrosive beams and chemicals.