You seem to be avoiding the question.
You're telling me that the story of Noah cannot be discounted without first proving God (of the Bible) doesn't exist, but that any other creation story can be discounted simply on the grounds that it's "implausible". Right?
Look carefully at our conversation.
All I’m saying is that once you accept the truth of God’s existence according to the Bible, you cannot refute the story of Noah by using naturalistic arguments. This is because God acts outside the laws of nature.
I can’t logically accept other religious accounts, because they are contradicted by the one I have already accepted as true.
If you cannot derive your answer from this, then restate the question concisely and I’ll answer it for you.