Where these diaplays properly calibrated ?
I have over 1000 Bluray titles and only very few of them are coming from bad masters and i consider them bad. Mostly cheap tries to get a title out on Bluray. (1080i50 video master made for TV put on a Bluray)
I did watch lots of these blu rays on a 120" 21:9 screen (JVC HD-750 and Schneider CIH lens) Radiance XD and sony/samsung/HDI-dune Bluray players.
DVD just looks less good on these screen sizes. (played from M800)
This was all color calibrated (projector and Radiance).
Perhaps if you test with non 1080p displays that cannot do 24p, the image quality of a Bluray is not displayed as good as it can be ?
If the internal processing of the TV does things wrong, it might not matter what you input, it always looks bad ?