Percy shouldn't be low if you're putting other water-controllers in medium
He's created hurricanes and earthquakes, so he probably beats Low tiers such as Sheldon Cooper in a fight
I didn't remember that. What degree does he have over these powers?
For the earthquake, it caused a volcano to erupt, which caused everyone inside the volcano at the time to be launched all over the US and freed a giant monster stuck under it
The hurricane kicked the shit out of Hyperion, who is a deity and etc. etc.
Point is, he's definitely should be at least Medium with other people with superpowers
If he can do that on command, I'd say he's even a high ---
Video Game Music Contest 14 winner: Terraria Calamity - Scourge of the Universe