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