interesting...after doing a test here and posting for my first time on piefed I see one difference that is clear.
If I make an edit to my post on Mastodon while replying to something on NodeBB it will update NodeBB with the new edit.
Updating the post on piefed doesn't happen though after I make an edit, at least not immediately.
Perhaps I should check later to see if anything new has happened.
Perhaps this is by design.