DVDINFOpro says that they are made by verbatim because this fake data has been burned onto the dvd. This data is a MID code and can easily be copied.
The problem is that a disc that is identified as an MCC (verbatim) disc but actually isn't. The burner thinks that its MCC and burns it how it would burn an MCC disc. This usually causes errors as the disc isnt being burned how it is meant to be (cause its not an MCC disc).
All discs contain errors such as PIE and PIF. But these can be corrected as long as there isnt too many of them. Fake media usually has much higher error rates. While this won't always make the disc unreadable it can cause the read speed to drop back, which may cause problems when playing a DVD.
Its all about luck, some burners really like fake media and burn them well, whereas others give terrible results.
Another problem with fake media is that the media is almost always poor quality.
Try to only buy named brands such as TY and Verbatim (the real verbatim). Dont just buy discs cause they are cheap. They will be more expensive in the long run.