The difference is the way the drive is written to. If I'm right, your other software can duplicate a disc, but it can't write individual tracks from multiple discs back to one disc. That is the difference that has kept Microstudio from using other drives.
Microstudio 3.0 should support your Pioneer drive. We have CDG import working for most drives now. We are now working on writing CDG discs from the Custom Assembly Tab.
