I personally think that for any games rating to actually be counted they should at least have 100 ratings. Just so you get a true average from more than 10 people, who either own the game or just love the iron man movie.
I have personally played the game and gave my honest opinion of it. I know for some games 100 ratings is unrealistic. But in that case they shouldn't be counted. Or just averaged out in another section because of the lower number of ratings. Sorry IM fans, but it doesn't even place in the top 100 for me. But other games on the top 100 don't honestly belong in some spots either.
Take a game with 100 or more put those in tier 1 of top 100,
then 75-100 below that tier 2
50-75 tier 3
25-50 tier4
1-25 last on list tier5