First off, the number of votes isn't the same as the comments. You can just choose a number without leaving a comment, so that's one thing.
Secondly, the comments added aren't refreshed more than once or twice a week, so it takes that long to see any new ones.
Third, they have an extra page to click on at the bottom of the post when there are more comments than the initial page can hold.
Eventually, they'll show. We are undergoing a change in personnel, so these things may happen, although I haven't verified that your comment about "six comments" per movie is accurate. In the past, I've left comments and they didn't show for two or more weeks because people take vacations and have other priorities. I know a person has to actually let the comments out each time they're updated; it's not done by some computer timer.
Hopefully, they'll show soon, and you can contribute more to the forums. I'll talk to you later.
"Naked Woman, Naked Man
Where did you get that nice sun tan?"