Lightroom downloader - LR sync

1. I have done a new export from LR cloud using the Lightroom downloader.

Results as follows as per Download report:

Originals downloaded: 145,968

Edited version downloaded: 44,117

Failed downloads: 1

Total: 190,086

“Get info” on export folder: # files = 195,346

2. I have done a sync (Local Storage preferences, you have the option of changing how much of your available disk space Lightroom is allowed to use. Originals are always backed up to the cloud. You have the options to store a copy of all originals and smart previews on your computer’s hard drive as well. )

on a new external drive:

“Get info” on sync folder: #files = 134,956

3. # of files on LR CC cloud across all devices= 145,968

4. There have not been any new photos uploaded to the cloud

5.There have been no Sync or Export issues reported.

Using the following

Mac OS CATALINA

VERSION 10.15.4

LIGHTROOM VERSION 4.3

How are these file counts reconciled and how do i know everything is backed up properly?