Yeah, it's quite frustrating (since it's unlikely that the new POF will ever be able to claw it's way back into the top 5) from from the looks of it, the way the ranking system works is largely dependent on how many ratings a game has... And, since the top five games are the first games that any new member is going to see, that means the top 5 will always get the most amount of ratings, making it very difficult for the others to catch up (though I have noticed that Rogues is slowly climbing the ladder. I think it was at 12 about a month ago, and now it's up to 10, so there's hope for it yet. ^_^
Scrolling through the highest rated games, it seems like the actual top 5 games (in terms of ratings) are:
1. Rogues: 7.70
2. Homo Perfectus 8: 7.57
3. The Price of Freedom: Innocent Lost: 7.55 (Yey! ^_^)
4. Eternal: 7.31
5. Dead Man Walking: 7.30
And coming in triple joint 6th with a score of 7.28 are; The Order of the Midnight Sun, Through Time, and Hastings, 1066: Aftermath... (Which makes me feel super bad for the author, 'cos I haven't even heard of that one. Will need to give it a playthrough some time.) ^_^