The speaker at the assembly mentioned a couple of examples of how the Society maps are superior to "worldly' maps.
For example, in one worldly map, Ninevah was misplaced by 15 miles.
On another worldly map, Rome was placed at its modern location, whereas the society puts it on the site of the old forum. The speaker also said that modern Rome occupies roughly 1000 square miles, so this is a big difference. However, a quick calculation shows that 1000 square miles would be a city with a radius of 18 miles. So, modern maps couldn't misplace the city by more than 36 miles (even that would be extreme). The only map in the brochure that shows Rome has a scale of 1 inch=1000 miles. So, the error of the worldly map is infinitessimal.
I really don't even understand what they mean by "worldly" maps. All ancient maps must be taken from some old source. It's not as if these are original productions of the WTBTS.
The speaker who introduced the book at my assembly was so excited and used so many superlatives, that he was positively levitating. It was really out of proportion to what the release actually was.