I don't normally confront people directly here on HubPages since this format doesn't really lend itself to debate as much. The Q&A and forum sections might lend itself to debate, but HubPages as a whole doesn't seem structured that way.
As far as I know I don't think you can post a hub directly in response to another Hub like you could post video responses on YouTube. I am still new here so I am not one hundred percent sure. I have posted a Hub as an answer to a question once when I saw that a lot of the other answers were shallow and they were irritating me because I felt that they were answers that had no basis in any facts or sound reasoning. I ended up writing a pretty passionate hub, but I revised it later once I cooled down in order to give it a more professional and objective tone. That Hub 'till this day is my most read Hub.