I don't actually trust most of the ICO rating websites because most of them are paid for good rating and such activity will deceive investors. Despite the fact that ICOs pay most of the website for rating, I still trust ICObench website rating to an appreciable extent because they have team that review ICOs.
There are no precise methods for evaluating ICO projects. It turns out that their evaluation is subjective and most likely it is based on money. And this means that they can not be trusted