Ive tried out to find the link or the source of that table but i failed. When i clicked out the link on the image the site cant be reached. Why? I dont know where those numbers came from and the RIO of each project that can reach up and i dont believe that they can able to input the exact numbers of all ICO or projects based on their categories.

This is simply based on owners or creators research and ranking it up and i am really agree that Exchange projects can give out good returns but depending if it would succeed.