Confused

However, I think Clash of the Titans is better
compared to The Lightning Thief.

Watchable yes.

Something made us confused:

the relationship between the gods.

1. If Perseus was child of Zues (by Clash),
so who is Percy Jackson (by Thief)?

2. Percy killed Medusa. Perseus killed Medusa too.
So, Percy Jackson = Perseus?

3. Meanwhile Percy was child of Poseidon?

4. Medusa was raped by Poseidon (by Clash and En Wikipedia)
or Medusa was Poseidon's daughter (by Zh Wikipedia)?

And one thing, all the informations I read is from Wikipedia,

both in English(En) and Chinese(Zh),

and they gave the the different story of Medusa.

I'm confused @.@