This indicates if the writer can copy SafeDisc 2 protected game titles.
- How is it different than this 96 pieces of subchannel data (bytes or bits?)
There are two kinds of SubChannels: 16 bytes which is used for the SecuROM protection and some other protections. And 96 bytes which is roughly only used for PlaySation games.
- why is it that an AOPEN drive can still copy SD2 even though it does not support EFM?
Where did you read this? In my SafeDisc 2 list? Remember that my list is based on user experiences so it's different from the CloneCD lists.
If would advise you to go for the burner that supports EFM since the lack of reading abilities could be solved by using a different unit and correct EFM Encoding cannot.
The writing abilities are (to my opinion) more important than the reading abilities.
Hope I've explained it enough. If not ask your questions!