Your comparison says it’s of the '19 4k UHD disc and the '11 blu-ray, not the '19 blu-ray disc and the '11 blu-ray.
I went through a couple threads at blu-ray.com and there’s more than a few people asking for direct comparisons between the '19 blu-rays to the '11 blu-rays, but the actual comparisons don’t seem to have been posted anywhere as of yet. That’s what I’m looking for.
https://forum.blu-ray.com/showpost.php?p=17497680&postcount=7181
I’m interested in the same thing. I’ve seen a few of the HDR to SDR conversions posted, different but claimed to be correct (and thanks to those that have shared them). But I’d like to see the official 2020 SDR 1080p disc compared to the 2011.
People have spoken favorably of the 1080p compared to UHD. And whether that’s due to their hardware not displaying the HDR well enough or the mastering, it should be a more straight forward comparison to see the two SDR products.