Tom's Hardware's CPU hierarchy is not particularly representative of how these processors have been shown to perform in nearly all reviews, and has some major issues that affect placement, and arguably make it a bad resource in its current form.
For their gaming tests, they average the performance of just 6 games for 1080p, and 5 games for 1440p, so the results of any given game can potentially throw off the average by a fair amount. And realistically, even with a high-end graphics card, gaming performance is going to be mostly GPU-limited at 1440p, resulting in nearly identical performance across modern AAA games with most recent processors. So something is very wrong with the data, or how its presented, if they are showing processors like the i7-8086K down around the 75% mark for 1440p gaming, and 69% for 1080p.
And for the single-threaded numbers, they only average the results from three programs, Cinebench, POV-Ray, and LAME. No one is going to run Cinema4D or Pov-Ray (or any renderer) on only one thread, so those results are completely meaningless. Artificially restricting that software to run on a single thread effectively makes those nothing more than synthetic benchmarks. LAME is the only real-world single-threaded workload there, so the results are only based on LAME and two synthetic tests, not on the kinds of single-threaded software most people are using on a daily basis.
The multithreaded tests are more extensive, including Cinebench, POV-ray, V-ray, four Blender tests, Y-Cruncher, and two Handbrake tests. Though the results are a bit renderer-heavy, Y-Cruncher is arguably a synthetic test, and encryption/compression tests are left out for whatever reason. In any case, showing the 11900K outperforming the 10900K with 25% more cores goes in contrast of most of the multithreaded benchmark results I've seen for those processors, and doesn't even align with Intel's claimed IPC gains.
Overall, the rankings in all of the charts seem a bit questionable, to say the least. I would hardly read much into them as an accurate performance comparison.