Keep in mind it's tested on a x470 Gaming 7. If you actually own the board you know that F40 BIOs isn't fully ironed out yet even for Ryzen 7 2700X let alone the 3rd gen Ryzen chips.
For example with 1778 CB R15 score that's around 3.95-4GHz all core and even with Hynix RAM I attain over 176 single core CB R15. The CB R20 score seems in line with stock though.
Essentially what this suggests is that with mere 4.5GHz boost clock Ryzen 7 3800X/3700X will edge out the i9-9900k (5GHz single core boost, ~4.8GHz quad core boost) at stock. The cooling used isn't listed and that affects clockspeeds with precision boost.
The latency numbers for memory leave a lot to be desired. AMD slides have it at 69ns for 3200C14 kit , this review has 80ns. This may partially explain the gaming deficit., since in DX11 Firestrike and Dx12 Timespy Ryzen 5 3600 is almost on par with the i9. They didn't use 1% or 0.1% lows , a mere FPS number is given.