Ths364 - It can be also, that many ripping programs like EAC or MAX go many times over the same sector until they obtain proper checksum. CDP cannot do that, working in real time, (at least most of them) and interpolates missing samples. That way CDR can become better (repaired) version of poorly printed (or scratched) CD.
Cross Interleave Reed Solomon Code used with CDs can error correct scratches along the disk up to about 4mm and then for scratches between 4-8mm it interpolates. Above 8mm it quits (pops).
Cross Interleave Reed Solomon Code used with CDs can error correct scratches along the disk up to about 4mm and then for scratches between 4-8mm it interpolates. Above 8mm it quits (pops).