What is that?
I believe the map in post 7 shows the sizes of the countries of the “new” map in blue overlain on the “old” map (in white). As another poster said, the new map must overstate the size of all of the oceans.
It would be interesting to look into the history of the map we usually use (Mercator) and how it was chosen. An old friend started a map store years ago. I always thought that was odd, but he did okay with it. Regular maps for travel, but then all sorts of different maps just for show, decorations, science, etc.