I think that you should not rely on the opinions of such sites. The rating there is built on the opinion of the majority of ppl, and there is like 100 new ICO's each month now, so it is impossible to track them all, and i think these rating sites based on selling advertising, so no need to believe just for rating, always make your own research before investing
I agree, this ratings could be good as your second opinion or option to see how they rate that particular ico. I am firstly doing my research and reading next is to find reliable informational materials and go with ico ratings. Some of their reviews was biased or not good because manay good ico was a low rating for them and that is not so much good to invest some of it was on top rated.