"Not really", and "pretty much". Scans will always be different between drives.
Here's one of those year-old Fujifilm ProdiscF01 I located.
a year ago after it was burned, by DW1620,
today, by DW1640,
today, by DW1655,
today, by Lite-On 165P6S.
If anyone's optimistic, it's the Lite-On. 6 PIFs, right...