Why would users wallet sizes be different even if they have the same policy settings?
This could be caused if a user was upgraded from a previous version.
In the 8.1 release there were a number of "Globalization" changes
introduced into the produce for any of our larger customers we
recommend they backdate some of the policies to avoid the entire Agent
community having to get these new changes and causing massive amounts
of data to be downloaded. These new changes would then only be updated
if there were changes to that policy but if installing a new client or
if the users wallet was removed and then downloaded again they would
now receive the new "full" wallet which would show us a larger size due
to newly add support that has been added.
This would explain why you would be seeing wallets of a
different size and why were seeing what are the expected sizes when
removing the wallets and downloading them again.