They don't express the same sentiment.
Ops comment is essentially "women are lesser beings"
Edna's signature is essentially "look how outdated, ridiculous and laughable the attitude that 'women are lesser beings' is"
I don't know why Albuman made the announcement that he reported the post, but I don't see a problem with him reporting it. Just because mods are in the thread, doesn't mean they will a) see the post, b) act on it. Sometimes I miss posts while reading a thread and don't notice them until someone...