The first report has 3632 pages and the second has 3578 pages.
Is this because of the number of photos and their sizes or maybe because of the page setup (larger page = more pages)?
I think it is better to sort the biggest reports according to the number of individuals and not the number of pages in the report.
What we will have to do is fix GenoPro and http://familytrees.genopro.com/ to send the number of individuals in a report, so we can have a more precise count. Estimating the number of pages is almost impossible because some report templates may generate more pages than individuals, while some other individuals (without information) may not have any page at all.