According to the tester a 12900K with 6800MHz DDR5, Guessing he overclocked a Teamgroup 6400MHz kit, Can hit 245 FPS in the same scene as opposed to 231 of the 5800X3D.
Looks like memory speeds will become slightly more important going forward.
Some games prefer memory latency over speed being another factor, whilst this initially looks to be very impressive and bodes extremely favourably for next generation Zen; ultimately, the 5800X3D is the last throw of the dice on what will soon be a previous generation platform (with a speculated retail price tag of £450ish to boot).
At the moment the performance in games and apps is 6 feet one way half a dozen the other. There are very few edge cases (Threadripper) which is very good. You go through benchmarks and pick a CPU that fits your games best. It is not one CPU to rule them all anymore.
Competition is good.