Read about them on a non Apple forum or after Apple starts using them and you probably won't get that impression.
I would actually HIGHLY recommend getting your info from displaymate... lol, it's a bit silly to say: "forum opinions are biased; so go get your info from.......... ANOTHER forum!"
I guess that's good advice if you're trying your best to speak in an echo chamber, but for ACTUAL knowledge; an impartial source is the best. So- a website devoted to display tech & the scientific QUANTITATIVE testing of such trumps "forum info" 10 times out of 10".
Here are some REAL numbers.... not my opinion- facts.
Since most smartphone use is NOT in the "perfect dark", but rather- in normal buildings under artificial light, or outside under natural light- more important than "what percentage of the rgb gamut is portrayed", when it comes to real-world usability & enjoyment are these three elements:
1)Luminance (aka screen brightness)
2)Screen Reflectance (as all screens reflect, regardless of underlying tech)
3)Contrast Ratio for High Ambient Light (likely the ONE spec with the greatest impact on common use)
The S7 has a VERY nice OLED screen!
The Luminance measured at 440 nits, called by the experts at DisplayMate "comparable or higher than LCD screens of this size".
The Screen Reflectance was measured scientifically at 4.6% & hailed as "close to the lowest that we have ever measured for a smartphone".
And finally, the Contrast Ratio for High Ambient Light ranged from 88-118, again standing out as "among the highest that we have ever measured for a smartphone".
So, I believe we can logically assume that OLED tech is solid & usable, and provides for a fairly pleasant user experience!!! =)
HOWEVER....
Let's look at the 9.7" Pro's results as well.
The Luminance measured at 511 nits "the highest of any mobile device tested"
Screen Reflectance is 1.7%, "a major enhancement that reduces the reflected light glare from the screen by a very impressive factor of 3 to 1".
& lastly, Contrast Ratio for High Ambient Light was 301, "by far the highest that we have ever measured".
TLDR;
The S7 OLED screen is REALLY good, but the iPad Pro 9.7" still trumps it handily in three key usability areas.
It is unknown if these three areas will see parity by next year, when the assumed switch to OLED for Apple occurs.