Regardless of resolution the point is it's a faster cpu than the 12900k in that benchmark (certainly at that one game). The results will scale even with higher resolutions although the difference will be smaller.
If you test a 12900K against an 8700k at 720p the results will show the 12900k to be higher, but the 12900k results are higher at 4k too. Obviously that gap is smaller at that resolution but the 12900k is still faster than the 8700k.
The point of testing at a very low resolution is to make the benchmark as cpu bound as possible.
Are people expecting the 4k results to show that the 12900k is suddenly faster in that one game? And even if the 5800X3D is faster in most games at usable resolutions the reality is the 12900k is still an overall better processor, but the point of this processor is to be affordable and perform very well in gaming. There's a market out there for that.
I've also not ever understood brand loyalty, yes I've personally had more intel cpu's but that's because over a long length of time they have been better processors.
But if a chinese company randomly released a cpu that was the best out there I'd be interested in that too.
Are certain individuals not going to entertain an intel GPU for example if that's better because of a weird loyalty to amd or nvidia?!