@cricketbluebow
Unless you are asking about alt accounts, I only see one of your cities that is in Fairies (Human-Ceravyn). Your only other scroll boosted city is in Woodelves (Elf-Khelonaar). Your other 3 cities are all in Orcs or Woodelves. You may be inadvertently comparing apples and oranges
There are differences in both the space required as well as population and other costs between Human and Elven cities for these factories. The smaller factories require fewer resources and have a smaller production. Scrolls factories become the same size in both city types once you reach Sorcerer's and Dragons. When that happens, your Human scroll factories will require much more population (and other resources) to upgrade to chapter level than your Elven scroll factories at the same level (because your Elven scrolls are larger at that point to start with).
There's an overview table in the Wiki for all factories showing the breakdown of all these sizes/resources/etc. The following link will take you to the one for scrolls factories. It starts at the Elven table but you can scroll down to get to the Human table. Sometimes these pages load with the information collapsed; if you find that to be the case, just click on 'Expand' in the upper right corner of the table:
Scrolls Factory Overview