Well, it all comes down to the mods. It doesn't really matter how much a comment is voted up. Only mods decide if the comment is good, not by how much it is voted up.
A merit is a reward for writing very thurough reviews on games. Of course a mod has to see it, and merit it.
Here, take a look at this guide which was made by XCoheedX and nick_coolhaha. It has pretty much all you need to know about a merit and how to get one!
Well, if that is going to happen, maybe you should make it for the higher class people. Like if you have 5000 points. That would be enough. And how do you know that they wont vote for a small comment not a real merit worthy comment.
I have not gotten one yet I do not know why I have made merit worthyt comments and yet nobody sees them like on year of the snake and pillage the village I have done good comments http://armorgames.com/play/420/year-of-the-snake