My imaginary god

[Ahriman]

They can just say their god is real, hence there is a difference (in their eyes).

Yes, but everything they would say about the reality of their god, I could say the same about my imaginary one. There is nothing real about their "real" god.

It's only a claim.

I can claim my imaginary god is actually real.
I can create an imaginary painting and then as a grand coincidence, an actual painting that matches my imaginary one could exist.

We still circle back around to providing evidence of this "real" status.

There is not much difference (if any) between what can be imagined, and what is real.