The answer is a resounding NO!

1. I have found an inconsistency between BlogEngine.Net and ScribeFire. I just happened to see the problem today.
2. If I post an article using ScribeFire, everything appears to be correct on the blog.
3. Next, if I decide to edit the entry in BlogEngine.Net's editor, I get two copies of the article.
4. If I delete one of the articles, both copies get deleted, however, you cannot see this from the browser where you are editing.
5. If I visit the blog using a different browser, I cannot see either article.

I chalked this up to some operation I was performing incorrectly. However, I think it's a problem in the BlogEngine.Net code and how it implements the blogging protocol BlogML.