I was thinking about how people were like "OMG!" when Eleanor was close to Culture victory in the Medieval era but she only had 3 great works in her cities. I think the fact that the map was on "Tiny" size and that Ed and Carl both completely neglected Culture allowed Eleanor the chance to win a CV. Plus Ed & Carl were able to stop Eleanor winning fairly easily. I was thinking the AI had been greatly improved but I think the above factors playing a big part in what happened.