I'd suggest there would still be quite a bit of difference between the original LaserDiscs and such a DVD, as from what I have read here, all these LaserDisc renditions have to be done by capturing the video footage, as LD players were never designed in such a way to interface them with computers...well at least for the home user, perhaps there's some old abandoned equipment out there from the early 90s that could do this.

Anyway with that said, when you capture footage, whether it is from LD or DVD, it can never truly be that close to the original regardless of specs and process you use, as you are recreating the image itself frame by frame with the equipment and software you're using, where as a "rip" as people do with DVD discs etc, takes the digital information and converts it to whatever format your encoding to. The only next best thing is having the original master film. LOL

Hope I haven't been too confusing here, it's just I've been into digital video/audio editing and authoring since '99, and have mostly been involved with wrestling media sites, which these days are nearly extinct, but in their hay day, many sites and forums I belonged to and worked for had many conversions about this sought of stuff, and I was always on the side for quality, as I am/were a huge quality freak when it comes to digital audio and video.

RATLSNAKE