Mentor, you are incorrect. All DVD's are authored from NTSC or PAL resolution masters. The source of those masters are higher-resolution images in various formats, downconverted, but their initial higher resolution does not necessarily increase the perceived grain at the end of the downconversion. In fact, it often helps smooth the images when the source is ultra high-res. I often get cleaner results downconverting from 4k film scans than from 2k. When I have a lot of bluescreen work to do, I usually insist on 4k scans, and it nearly always helps. In this case, the pre-93 laserdisc is unquestionably a touch softer than the 2006 transfer, but not by a significant enough margin to justify the extra grain; not by a long shot.