Sorry I don’t get what you mean.
I can’t take the idea that, if some all powerful being did exist, he/it would just happen to correspond to some Christian’s notions about who god should be, as worth considering. Either all human religions describe real gods, or none of them do, by that yardstick, and if that’s the case it wouldn’t make any sense either, as they don’t allow for each other’s existence.
No, the only reasonable notion is that while it is impossible to know that there isn’t some sort of god being type thing somewhere, the idea that some people imagining and writing books about a kind of god made those gods real is just beyond any reasonable consideration. If you accept that, you would also need to consider Cthulhu as a real possibility. The only difference between Cthulhu and some other god people actually being in is that Cthulhu is acknowledged as fictional. There is no other difference - they are all characters in books written by people about imaginary events and beings.