That was purely an answer to you stating that the L3 in Zen 2 can only do so much.Yeah because Skylake-X has comparatively much less L3 cache than mainstream parts, slower non inclusive L3 cache, and the mesh topology which all hurt its gaming performance.
That said, Cascade lake-X can easily be tweaked to offer excellent gaming performance with overclocking (both core and mesh) and using high speed DRAM. I really want to see a desktop Willow Cove part with more than twice the amount of L3 cache as Cascade lake-X, assuming the HEDT version would keep the same cache configuration as the mobile version.
I already said that Zen 2 is a strong core. But for the sake of fairness, many people forget that it's also going up against an almost 5 year old Intel core.
If Intel hadn't screwed up their 10nm process, a Willow Cove desktop variant would be significantly more performant.
On the desktop you will only see WC backported to 14nm (if everything goes according to plan) in 2021 at the earliest, and I really don't think you'll like what it's gonna be like. Though I'm sure that the real world benchmarks are going to look awesome on the slides.
Please don't misunderstand me, Sunny Cove is an awesome uarch already, but here your phrase would fit perfectly: the amazing design can do only so much, trying to hide both the epic failure the 10nm is, and Intel's arrogance.