You do not need to come up with your own assessment. DisplayMate is a recognized authority on display quality. They stated unequivocally (for two years in a row) that Samsung AMOLED screens are the best for phones.
Also, you are repeating old anti-OLED falsehoods. In the very same review that I quoted, it says:
The Galaxy S7 matches or breaks new records in Smartphone display performance for:
- Highest Absolute Color Accuracy (1.5 JNCD),
- Highest Peak Brightness (855 nits),
- Highest Contrast Rating in Ambient Light (186),
- Highest Screen Resolution (2560x1440),
- Highest (infinite) Contrast Ratio,
- and Smallest Brightness Variation with Viewing Angle (28 percent).
I didn't make my own assessment, I linked to DisplayMates. I think you didn't click through to it... You also need to understand the tables, you can't just pick off numbers without thinking about what they imply.
The LCD performance, on the metrics you lay out:
- Color accuracy: 1.3 JNCD (better than 1.5 of OLED)
- Contrast in ambient light: 301 (better than 186 of OLED)
- Normalized power: 1.26W (better than 1.45 of OLED)
- Brightness 30° off axis: -45-55% (worse than -28% of OLED)
Brightness measurements are complex here. The S7 is not able to sustain the high peak brightness across the entire display, which is why they only light up 1% of the screen to test it. Notice that the S7 brightness falls precipitously when 100% of the display is lit. All white, max brightness, the LCD is brighter. 1% white, "auto brightness" the OLED is brighter.
You didn't look at the power numbers, but when scaled linearly: 6.3W * (11.1/45.1) * (511/414) = 1.26W. I think a linear scaling here is probably conservative-- I'd bet that the LCD backlight and power supply get more efficient at smaller sizes and reduced brightness and would actually come in below this 1.26W number.
The infinite contrast ratio is in a zero ambient light environment with the display at max brightness. While an interesting technical metric, it's not a useful one for an end user. First, most users keep their displays at less than full brightness in a dark room so there is less than the 0.5cd/m^2 bleed through. Second, if there is more than about 10cd/m^2 of ambient light, then the screen reflectance of the S7 becomes more than 0.5cd/m^2 and the Apple LCD contrast is superior from there on up. Accounting for the fact that the user will dim their screen in lower light (or their pupils will adjust to the brighter light leading to darkening of the blacks anyway), the cross over point is somewhere below 10cd/m^2 ambient light.
It's worth noting that below 10cd/m^2, the human eye doesn't detect color-- so if you can see color in the room you're in, the LCD has better contrast.
OLED does tend to outperform on viewing angle brightness, and this eats into the LCD brightness advantage off axis, but it's worse at color reproduction off axis (6.7 JNCD vs. 1.4 JNCD).
So, of the things that the article claims that OLED outperforms on, your reference confirms 1. That was my point-- the article states these things as facts when the evidence doesn't back it.