I don't get it how did every CPU get slower?

https://www.techspot.com/review/2911-intel-core-ultra-9-285k/
https://www.techspot.com/review/2915-amd-ryzen-7-9800x3d/

Testing rig setup, drivers, all are basically the exact same. The results are published a week apart.
What's the explanation because I'm seriously confused.

I also don't get that he said the 285K was tested with less time, but even more CPUs were tested than for the X3D which didn't have any notes saying they were time constrained.