In this answer the author says: "I don't have enough rep to comment on your question so I had to post as an answer."
The description text for the flag "not an answer" says: "This was posted as an answer, but it does not attempt to answer the question. It should possibly be an edit, a comment, another question, or deleted altogether."
I understand the authors intention was to post a comment and I know that moderators can turn answers into comments. I think the description for the "not an answer flag" is applicable ("it should possibly be a comment") and so I've flagged it as "not an answer". Surprisingly my flag was "declined - a moderator reviewed your flag, but found no evidence to support it".
Isn't the intention of the author (he just wanted to comment but has not enough reputation) sufficient "evidence" to make this answer a comment?