Ryzen 3600X OC overtakes a 9900K per the user’s testing. Zen2 scales with IF timings and memory subtimings.
In the past others have tested the OC of the 9900K and noticed memory subtimings also push the 9900K but to a lesser degree (Skylake is already efficient). Zen2 scales upwards of 20% in ST performance with only subtimings (synthetics).
The amount of work to get a few more fps in WoW is staggering. The amount of work to get a few more fps from Zen2 is even more staggering. All that work might not be worth it for normal users and most people definitely don’t have the knowledge of either chip to bleed out max perf.