The Xiaomi is OLED and the LG is fancy LED but still LED which is inferior in every way to proper OLED (except viewing angles which isn't relevant for a TV).
If the Xiaomi is decent quality, I'd expect it to sell like hot cakes. Put one next to any LED tv in a properly-lit display area and it would look much better. Just the nature of the technology.
Sounds great on paper (web?), but my 66 year-old eyes can't even tell the difference between 720p and full HD at 4 meters from the TV. I reckon that a large percentage of the world's population is in the same boat, but they are for some weird reason scared to say so...
PS - viewing angles are very important for TV viewing. If you don't agree, then you are probably a person who sits alone directly in front of the TV every night





