Yep the results with Verbatim DVD media seems tricky.
However it gets more weird.
Some disc's that use the same pigment do not have this behaviour.
Which make me think was it the dye ???
A bit unlikely but possible since dye is pigment + solvent (+ quenchers)
Or did someone bork up the support for this media.
No one can give me the info or the answers to that one.
Also you can't compare with AZO cd-r's. Since it might say AZO on both boxes. The AZO versions on DVD are different as the ones used on cd-r's.
(Different chemical composition but some structure groups both have give it the AZO name.)
The results you got are out of standard.
So I wouldn't use this media on this Lite On drive (as a reader) when it comes for storeing data.
Now it becomes more tricky with another reader I might say it's good enough for quick storrage. (we are talking about 3 months max) However these scores are not good enough to me justify any important stuff.
Keep in mind that these older optodisc disc's are not that good supported and quality fluctuates huge (It's Optodisc I know some people over the water can get some good stuff however finding good 4x Optodisc media in Europe is a tricky challenge. )
Manufactuering quality most times is good so from the ageing point of view your quite safe it's just that they should work better from the start.