You are claiming that they are eyewitness accounts. They are not. Plus, they're just stories in a book. We have no way of investigating any of it, especially without any outside sources.
Yes they are and you haven't given any proof it isn't. Just because you say it is a story, don't make it a story. There is enough evidence and enough external support to validate it.
Now, I know you want it to be a story, but history has enough evidence that it is true unless you want to say that Mohammad never existed too.
I think it does unless you want to rephrase it.This doesn't address my point.