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?
Yes you may include ICO rating as a factor . Just as a factor and not a main choice, ICO rating is just helping you to make it easy for you on choosing an ICO, but still your opinion and your judgment are still the main important...i may say that do'nt make ICO rating as your main choice just
make it as a basis and choice your own ICO base on your own evaluations.