Uh, my post outlined a bunch of things they have in common beyond using public keys…

nostr:note1yp62h2gvfyrajlggv0e77ra4cy6djvakrappmup3akztfvuyuqnqktzp62

Perhaps you’re reacting to how they’re both open source but one’s cathedral and the other bazaar, or maybe the difference in user community in norms, or the way currently Nostr is permissionless and bluesky’s version of the atprotocol is permissioned right now.