They explain their rationale in the article: "Traditionally we test our memory settings at JEDEC specifications. JEDEC is the standards body that determines the requirements for each memory standard."@ikjadoon
Anadtech used CL22 DDR4 for some reason, looked like they wanted to have bad results on that front. CL16 or even 18 (which also comes close) is available at very good prices and perform near or better than DDR5 4800 sets.
I haven't even seen CL22 DDR4 sets available for purchase.
The JEDEC standard for DDR4-3200 is CL22.