That's strange, because because I've seen at least two comments duplicated on Arete. If you check the mod logs, you'll see I recently removed what I thought were duplicates but saw that it removed also what I thought was the original comment. I had to reinstate it since I hadn't yet realized it was a bug at the time.
Huh, I see. That seems to be an unrelated site bug on arete itself. It's functionally referencing the same scored.co comment, just posted to Arete thrice.