I already evaluated Creole and prefer Markdown. I also prefer reStructured Text over Creole.
Searching for comparative reviews, I’ve found five, neither of which recommended Creole for any particular reason.
My main point of review is how to make local links:
When I use Markdown, it’s either in my Obsidian notes which actually have a wiki-style [[link]] syntax (not standard for Markdown), or it’s in a git repository where local links means a link to a relative file path.
The latter is more portable, whereas wiki-style namespaces assume one homogenous knowledge base, which makes distributing documents more difficult.