Not sure I trust what they report fully, especially as it isn't clear from their site exactly how they are testing.
I didn't really trust them before, and now that I just popped in the 3950x I was lucky enough to get from amazon, I really don't. I may have gotten lucky but I did their 3900x test where they claimed that only "6% can do 4.1 all core at 1.25v" and I have no problem doing 4.3 at all core in Ryzen master and ran CPU-Z "Stress CPU" (while validating speed in Task Manager) until I got tired of looking at it without problem.
They are claiming only 19% can even do 4.15 all-core at 1.325v?? Not buying it.
As all I did was drop the voltage to 1.25v max and put the cores at 4.1, 4.2 and then 4.3 to see if their claim seemed off. Will play more tomorrow but I would put more money on their claims being BS than my getting a unicorn CPU.