Well, if the sim replicates the actual game, as you say, 'point by point', then logically you are forced to transform a game rating into an individual point rating.
However, I think that anyone who takes this seriously would have to admit that most of the time we are in a GIGO situation. So instead of try to nail it rating-wise for all 8 entries, it might prove more effective to limit your attempted insights to '2 powerhouses, 2 duds' or something along that line.
Since Socrates said, "All I know is that I know nothing", then maybe using a Socrates-style system where you come up with predictively good ratings for 2 or 3 posts and leave the rest neutral or uncertain would beat using 8 precise but in reality bogus values.
