Honestly, everybody else in the AMOLED game isn't even close. The Nexus 6 panel is miserable (~250nits maximum brightness lol, crap colour accuracy). Whatever Samsung is doing to make their AMOLEDs as bright as they are (and they're very bright for AMOLED) and as accurate and sharp as they are, it may or may not be as a result of the technology behind PenTile. Neither you nor I know what kind of decisions are made behind the scenes.
PenTile used to be a miserable piece of trash. I suffered with it through various phones, like the Samsung Focus and the Nexus S. It always gave off a mesh texture to solid backgrounds and straight lines always looked like tiny zigzags, and the maximum screen brightness was mediocre at best.
Modern PenTile is nothing like that. The PPI is now high enough that you don't see PenTile-related artifacts. The brightness is clearly more than enough to be able to use the phone outdoors. The only real complaint I have about my Note 4's display is that greyscale accuracy is pretty crap - white and off-white (grey) tend to blend in together and kind of ruin definition between colours in specific scenarios.
So yeah, time to update your knowledge base.
What are you talking about lmao, my knowledge is the most up-to date material , go read DisplayMate's report on the Note 4 if you havent yet, please do tell me what "modern Pentile" is. I never discredited the Note 4 display at all, I know it is great, the higher resolution covers up the Pentile effect and basically eliminates it when its at a high enough resolution (1080p/ quad HD espcially) but it is still there, pentile is still pentile and it will always have one less blue and red subpixel so that is why the Note displays white and green pixels at 511 PPI and blue and red subpixels at 366 PPI (which is well above 330 PPI but still under 400 PPI)
I also never said the Nexus 6 had a better OLED dislay despite it having a RGB pixel layout and all its pixels at 499 PPI(close to that mark)it defitnetly does not and is alot duller in terms of brightness and also other things which determines a displays overall IQ. Im merely talking about the sharpness/PPI of the display , in its native resolution.
And your telling me "i need to update my knowledge" lol....
They use Pentile pixel layout over other pixel layouts ,for one big reason : pentile pixels and having the OLED pixels in a pentile layout format (refined diamond matrix layout in Samsungs case which helps Pentile, but doesnt completly cure the 1 missing red and blue subpixels still) makes the OLED pixels last much longer and take way longer to burn out then other pixel layouts when using OLED . The pixel life is dramatically longer on Pentile compared to others and that with other pixel layouts (when using OLED as display technology) , the pixels burn out much quicker (according to Samsung) and already to start when using OLED as your display technology , pixel life is not up to LCD pixel life yet , that is one commonly known disadvantage of OLED right now in its current state(obviously LCD has its flaws too)
This is why there is already reports of people having permanent screen burn in on their Nexus 6's (erica griffin also got permanent screen burn in on her nexus 6) cause it uses a RGB pixel layout and is just not the best refined AMOLED tech around(Moto X 2014 display and Droid Turbo display look better actually imo, and go brighter and etc)
And lastly , alot would argue and say that they can see pixelation and see pixels at 366 PPI, when your viewing blue/red/redish text and content on the Note 4 (lmao a good example would be neon red/bluish text on porn websites, you can easily see it is slightly less sharper but obviously still great looking and very high res at 366 ppi)