danny_boy said:

The highest resolution that the assessors could still discern in the sharpest part of the screen(not neccassirily it's center) in the most performing movie theater was about 875 Lines/PH

I could see that, for the "most performing movie theater". I'm not interested in the quality of the "most performing movie theater". That's irrelevant for high quality film restoration. A proper restoration would try to achieve the quality of the highest quality projection, such as in a high end 70mm theater with a brand new print. Do your studies indicate the resolution of high quality 70mm projections of brand new prints?