Those rankings are mostly paid. I don't trust any scores and prefer to judge myself, after personal experience and researching of the subject. Other brains will never replace yours so that work on your own opinion.
Yub! Personal experiences, instincts and knowledges are really important and helpful in doing this business. I don't usually trust any comments, rankings or opinions even in other circumstances. I prefer to explore anf study myself. I'll take others' experiences and comments as references.