I've looked through old comments a few times, and my opinion of my comment quality had only a very weak correlation to the number of upvotes my comments receive

I've looked through old comments a few times, and my opinion of my comment quality had only a very weak correlation to the number of upvotes my comments receive. Specifically, comments that I thought made only small contributions to the conversation received the same number of votes on average as those that I thought were much better comments.