The tv has Gorilla GLASS, of course it will be reflective. Since Samsung uses a high gloss and not actual glass, its debatable at which shows more reflections. Since ive seen them both in person, to me the GLASS is more reflective than the high gloss but both have some great PQ. Also cause Sonys higher end models(NX n HX) use Gorilla Glass, it can tend to look sharper than just a LCD screen. Basically u can see a good PQ whether your up close or far away. I would like to see more companies use Gorilla Glass, I think it gives a better PQ.
As for LG, while they have used an all glass screen before I dont believe it was Gorilla Glass. I am not of fan of matte screens. They just look to dull. High gloss or Gorilla Glass is the way to go. Not sure what OLEDs will use but for current LED, I think Gorilla Glass is a start. Corning is starting to make Gorilla Glass 2 which the iPhone 5 may use.