I saw this thread on Reddit and found it very interesting. They look at the big three diaper companies: ABU, Rearz, and Tykeables and how many diapers they have imported into America in the last two years from where they are made. These are the estimates the OP makes for what the weight means in raw diaper numbers.
• Tykables: \~2.8–3.1M diapers (48 shipments). Their cartons are noticeably heavier than everyone else
• ABU: \~1.9M diapers (50 shipments)
• Rearz: \~1.8–1.9M diapers (45 shipments)
The thread is here: https://www.reddit.com/r/ABDL/comments/1v9y20w/i_pulled_2_years_of_public_import_records_for_abu/