Oh, geez. Now I'm second guessing myself.
I had two nerdy guys from Best Buy come install and do "calibrations" to my home theater setup when I moved in last year. They fiddled with things for an hour. I offered them Pepsi's during the process, and tipped them afterward. To me, it all looks incredible. Especially when I am watching a Blu-Ray, or a current TV show from a major media outlet in 4K. But even old 480p upscaled episodes of Three's Company look incredible on it. To me at least.
Is there some way of knowing if your 4K giant screen home theater is set up correctly? Aside from the confident words of two nerdy guys from Best Buy all hopped up on free Pepsi-Cola?