[Galaxy Note 4 General] BarryH_GEG:
Which discussion do you want to have? QHD on the Note 4 vs. the LG G3, the impact of QHD vs. 1080P on the same SoC/GPU, next gen GPU performance, the differences between graphics on iOS vs. Android, or LCD vs. AMOLED? They're very different discussions with very different potential talking points.

There is no way that Adreno 420/Mali T-760 can't absorb the extra load of QHD when compared to 1080P on Adreno 330/Mali T-628 and deliver near identical or improved performance. With those GPU's the concern of 1080P<>QHD wouldn't be performance, it would be battery life. DisplayMate rates the Note 4's display as 14% more power efficient than the Note 3's not taking in to account any new efficiencies introduced by the CPU/GPU so the impact of QHD on the Note 4's battery life isn't an issue. After following next gen GPUs my concern was never performance, it was always battery life; especially after Samsung announced the Note 4's battery wasn't much bigger than the Note 3's.

Adreno 420

The Adreno 420 is a brand new GPU, offering around a 40% increase in graphics performance over the Snapdragon 801′s Adreno 330 (found in all the current superphones, including the One M8, Galaxy S5, and Xperia Z2). We haven’t been allowed to benchmark power consumption yet, but Qualcomm’s own internal figures say it should be 20% lower. In testing, that 40% bump — in reality, anywhere between 0% and 50% depending on the benchmark — puts the Snapdragon 805 way ahead of anything else on the market. Beyond raw performance, the Adreno 400 series supports OpenGL ES 3.1, Direct3D 11.2 (with a hardware tessellation engine), and OpenCL 1.2.

http://www.extremetech.com/computin...last-hurrah-and-the-arrival-of-a-new-gpu-king​

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Mali T-760

http://www.androidauthority.com/mali-t720-and-mali-t760-312010/

Let's talk about the G3. LG took a huge risk being first to market with a QHD phone when the SoC/GPU's available to them couldn't support the load. The G3 throttles to extend battery life, gets abysmal battery life anyway, gets the benchmarks you'd expect being QHD/S-801, and lags horribly. That's not because of QHD, it's because LG took a risk whose success is debatable. Comparing the G3 to future QHD devices on S-805 isn't remotely relevant.

Everyone here looking at two different displays side-by-side, especially comparing LCD to AMOLED, is going to potentially have a different

subjective

opinion. After extensive

objective

testing here's DisplayMate's conclusion on which display is better, the iP6+ or Note 4.

The Best Smartphone Display

The iPhone 6 and iPhone 6 Plus are the current Best Mobile LCD Displays and the Galaxy S5 and Galaxy Note 4 are the current Best Mobile OLEDs Displays. Both are impressive and excellent displays with great state-of-the-art display technology. We recently gave the Samsung Galaxy Note 4 our overall Best Smartphone Display award, and for the time being that continues for all of the reasons originally mentioned there. In particular, for implementing Color Management to provide multiple Color Gamuts, and then using the Color Management to provide the Highest Absolute Color Accuracy for Standard (sRGB/Rec.709) consumer content of any Smartphone or Tablet display that we have ever measured (in one of its four available screen modes, which many reviewers seem to overlook). As we discuss next, dynamic Color Management is something that every display will need to provide in the future.

http://www.displaymate.com/iPhone6_ShootOut.htm​

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So while

you

may like the iP6+ display better than the Note 4's, or prefer LCD to AMOLED, it's really just your subjective opinion which of course you and everyone here is entitled to. Like you though, I buy what I like subjectively even after reviewing objective findings. To each their own. ;)