I didnt even know that he delegated it to them. But i suspected there were group of curators curating peoples post. But what i notice from this curators was that they were not really fair in their curation. You see them curating a post of somebody who has connections that joined yesterday and whose content is notvreally high quality and leaving others who have been here since with better quality contents. Maybe this is one of the reasons why @ned took back his steem power from them.