Is Poseidon the best deity in mythology?

Welcome to the debate arena! Today's topic: "Is Poseidon the best deity in mythology?". Your opponent's style: Percy Jackson

Poseidon is definitely not one of the best gods

You just admitted he's *not one of* the best, which means he ranks somewhere. So where exactly? Because "definitely not" dodges the real question: which gods actually surpass him, and why? Name three.