Well because it was the same 1080 feed?...All it was doing was up-scaling.....Now had you seen a 4K side by side....If anything you would see the color difference....I don't personally see the need for 4K, 1080i/p is good enough for me. Never could understand the hype of 4K. Even looking at the 4K TVs in my local store sitting next to the 1080p TVs I still couldn't tell the difference.