EVGA isn't known for releasing perfect OC BIOS. As far as the last Dark mobos were pretty good then most FTW or earlier Dark had a lot of problems just after release. In short, overclockers rather get the ASUS ROG series and make it easy than risk their money on EVGA. Overclockers who are after OC records are mainly sponsored so they get stuff for free, and those who aren't, buy stuff just after release to quickly get on top of the ranking. Where is EVGA, ASRock, or Gigabyte with their enthusiast series? ... about 4-5 months behind.
The next thing. For a couple of years, you can get not much worse CPU OC results on cheaper gaming motherboards than on these top OC motherboards. In reality, these top motherboards are usually overclocking RAM better, but not CPUs. The bigger problem is to find a good overclocking CPU than a motherboard that will push it above 7GHz. Even Supermicro had a world record for some time on their Z490 motherboard.
I thought I will buy EVGA Dark ... 4 months ago. Then I thought I will grab a Gigabyte Z590 Tachyon ... I was waiting for 3 months and gave up. Somehow I didn't want ASRock OCF. In the end I left with MSI Z590I Unify on which I had top 12 memory clock result and the next gen is close enough that I don't feel like I want to spend $600 (local expected price) on "already old" generation.