How to use CUETools DB

Hi...
I would like to use the CUETools DB to help me identify which editions (and, of course, which remasterings) of albums are included in certain digital stores and in boxsets like the Original Album Series.
But I must admit I do not understand the info provided to me. Maybe somebody here can help.
Let's say I use the Charlie Mingus' Original Album Series.
Ripping the Pithecanthropus Erectus album will provide me with the following CTDB TOCID: ysiKtoeVi62gN268SASKXY0evOI-.
I then enter the ID in the address bar, this way: CUETools DB
The next window is this one

Does this mean all the editions in the top section share the same disc? And the bottom ones are different discs sharing the exact same CRC32? What does Cf means? Confidence? And Rel? Relevance?
Which would mean, for all practical purposes, that each and every album have the same remastering?
I looked at different sources and the explanations were always too obscure or too difficult to comprehend for the amateur I am.