I have never used ICO rating. I have my own criteria for choosing projects such as white paper, a roadmap, a project team ... but I dont trust rating sites. I believe more in my strength and well done research.
Great to hear such since the use of ico rating is getting out of hand and not a single individual is ready to use it since ratings have not been genuine and ico rating websites have been found promoting scam projects which had higher ratings on their websites. Research is the only option left in other to trust and participate in a project.