GB difference Live vs Recovery = Why?

[admin]

After 5.2 install. Boot Menu & Emergency Disk re-create...then tested Boot Menu & Emergency Disk...then ran Full System Backup.
Does GB difference make sense?
Full from recovery enviornment - 68 GB - 07:22 minutes - Low compression
Full from live machine - 35 GB - 02:45 minutes - Med compression.


re-test:
Test 1 = Med comp - Full from live = 35 GB

Test 2 = Med comp - Full from recovery = 69 GB

Note: Test 2 does not appear with Logs?

If the Windows partition (C: drive) is BitLocker encrypted, the image file generated in WinPE will be larger because BitLocker may not be unlocked in WinPE, in which case the program performs a "Sector by sector backup", which means that all sectors will be backed up.