Jane Austen's famous prose

What can we say on Jane Austen's famous prose. Basically, that it is not her own. It turns out her editor was in fact doing a lot of the writing for her famous novels and all the credit went to jane. This is interesting to me. Perhaps using statistically analysis we can make other discoveries as to authorship of work in the dim distant past, but I feel cheated in some way. Let's say with persuasion.