One way to tell would be to see how bunched up the ratings are. If you did some sort of analysis you could actually be quite sure. The more bunched up the more luck.
Crowded Backgammon seems to be less bunched than the others. I haven't the time to analyze too closely though.
(hide) If you need to find an older message from the selected user, click on his Profile and use the "show this user messages" link at the page top. (konec) (show all tips)