I picked up the Batman Lego dictionary last week. The timeline pages are quite sparse as the line is a lot smaller than star wars and harry potter themes. Although it's 96 pages the book feels shorter than the others maybe due to the two page comics and splash pages in between sections. There's 18 pages dedicated to the video games which feels like too much. Also the cardboard 'page' for the exclusive minifigure is also thicker than the one in the star wars visual dictionary. Pics below