nogahorovitch Rtings apparently say one thing and shows another, maybe they should say "this tv is flicker free enough" or something, because I think they mean the tv will not bother the majority of the people, also they get money everytime you buy products through their links.
If you look closely at their graphs in some sony tv reviews like the x80k and x85k, the pwm graphs are not flat at all and still they say these tvs are flicker free, for example I am not sensible to dithering but I am very sensible to pwm flicker and I had a Sony 50x85k that I had to return because I could't use it no matter the configuration, I felt very dizzy I had eye strain, and all the symptoms that I have with flickering led lights.