their guess is that it still runs at about 1200P which is more than enough. 1080 has been the standard for seeing for a while, the option to output a higher resolution has been there for a while, most people stuck to 1080p with more frames as opposed to bumping up the res.
And trust me, if the option to lower that res further to push more frames, many people would do that, but unfortunately these boxes cap off at 120Hz
ON PC. That competitive scene doesn't go much to consoles, and even if the consoles offered that option, they would not abandon PC where they have even better options and can actually have high res and high framerate.
It takes genuine talent to see greatness in yourself despite your absence of genuine talent.