When I said inconsistent, I meant inconsistent in the error scan results compared to results with Lite-on drives on the same disc. And the difference in error rates reported by a Samsung BD-ROM drive and Lite-on BD-RW drive do vary quite a bit based on the disc MID. The Samsung sees some types of BD-R similar to a Lite-on, then it reports other MIDs very different from the Lite-ons. Members who do a lot of scanning have reported that the Lite-on results have been more true to what is seen with transfer rate tests and real world playback behavior.
Simply put, do not be too concerned with the Samsung BD-ROM results.
As has always been the case with quality scanning, the results seen are the interaction between that particular drive and that media, and not an absolute measure of physical errors on the disc. The challenge is to find the consumer drive that is most able to give results that are reflected in real-world performance of the media being tested.