Means POLED > AMOLED ?
Fansees logic? lol. I don't see anything wrong to have different brands of products and supporting them, since competition can push technology further instead of being stagnant. In a household, we can have Sony TV, Samsung washer, Mitsubishi aircon, Apple ipad and LG G4 smartphone.
I have never tried that before though I have seen a youtube clip on that. Top and bottom split for two different applications. Big screen have an advantage. Maybe the new UX 4.0 will have that?

Maybe iphone 7 or 8 then apple will catch up, they are very slow in development after Jobs had passed away.
Can I ask how come you're not on iphone 6 instead of s6?
Share comparison of S6 and G4 when it's out ok, esp camera.
Metal is seen as premium => High price. Like that how to snatch business with rival samsung. Personally, I don't really care what material. I'd never get to see the actual phone back cover for a long time after getting a case.