It is true that there are powerful ones, and weak ones. Strength is the fundamental measurement for you to be characterized on powerful ones, or weak ones.
But every powerful and weak ones have weaknesses. No matter how great or powerful you are, a weakness shall conquer you in every way. Zeus, the God of Gods, has a weakness too. It is not elemental, or water, or whatever. Zeus' weakness is Women.
Zeus of Olympia likes women. But not just women, it's Beautiful women. He likes beautiful women so much, that a Goddess, who is so beautiful, seduced him in order to get what she wants. That Goddess was no other than Hera. The Goddess wanted to help the Achaians, she seduced the God then Zeus slept. Hera did what she has to do with Poseidon, and that is helping the Achaians. Zeus woke up and saw Poseidon, and got angry. But as soon he heard Hera's excuses, his anger faded.
This is how a weakness can make a fool out of you.