They seem biased to me. A friend of mine who's doing an ICO told me that they paid 10ETH for 5 quality ratings and that's that! I noticed that some ICOs with good project, team, and good social media presence are struggling with getting good reviews.
With all that said, should it still be a factor to look at when investing in ICO?
Well, that depends on the coin they listed as their top ICO.
I also believe these so called websites that usually rates the current top ICO's in the market. However, it supposed to be a guidelines for checking the legitimacy, sincerity and road map of an ICO and whether it was the real deal or not.