I think that basing from the leaks publicly available for us, it does seem that the quality, fidelity, clarity and colors seem to surpass any known source of the OT transfers, SE or Otherwise. That was one of my main gripes with the 2019 masters: they were too soft on the fine granular details and seemed to have a wash of DNR layered underneath some frozen/static or artificial grain.
I think that the fan projects and edits of the film (especially those dealing with the theatrical cuts if these will ever make a physical/digital release) will now have to face a new problem…
For the first time in history: We now have to make the SE match the QUALITY of the OOT, especially in terms of the detail, clarity and colors that each transfer clearly lacks in comparison to this new, work-in-progress restoration.