Differences between God and Spiderman (let's leave Rita Hayworth for the moment):
The fundamental differences for our discussion have been summarized in the image of the Superfather.
I repeat:
God is the Allmighty Superfather understood as Providence, Love, Justice, etc. He explains everything and gives eternal life. In order to be elected to the eternal life, we only have to submit ourselves unreservedly to God... and his representatives on Earth.
The idea of the Superfather is that of a superior being who has the power to protect those who believe in him and offer a supreme reward or punishment.The image of a Superfather are the typical characteristics of the religions that are dominant in European and assimilated societies.
No one who has reached the age of reason (normal people) believes that Spiderman exists. Obviously no one can believe that Spiderman is a Superfather to him if he does not believe that he exists.
I hope the highlights help you understand what you don't understand.