Well... the MCC004 seem to scan quite badly also.
I wonder if there is some sort of problem with the drive.
Try the MCC004 @8x or 12x, see what the results are. If still bad, seek out someone with a liteon and do a scan with that just to see if it sort of agrees in any way.
You could possibly (in a good scenario) have perfectly working discs and a faulty scanner.
I am guessing you have a bad batch though. My MCC02RG20 and MCC004 burn quite nice on my 111L.