Zen has its own issues, it is not a matter of IPC, it is the matter of throughput and latencies. Rocket Lake will be a monolithic cpu with larger caches and presumably, with proper hw mitigations. So yeah, Rocket Lake gaming performance increase should be higher than the IPC increase.
I did specifically address only gaming performance, Zen 2 IPC is higher than Skylake's. There are just types of applications it doesn't translate into due to latency issues.
Yeah, lies. You know what is actually a lie? AMD Zen 3 gaming benchmarks. No one could get the numbers they got.
The Ryzen 9 5900X dominates Intel's Core i9-10900K in our testing because of AMD's massive IPC improvements. At $550, this processor is certainly not cheap, but it offers so much more performance, especially single-threaded, that AMD has a clear winner on their hands.
www.techpowerup.com
The official Digital Foundry review of the AMD Ryzen 9 5900X and Ryzen 7 5800X, hosted by Eurogamer, including synthetic and gaming performance tests.
www.eurogamer.net
Hardwareluxx hat den AMD Ryzen 9 5900X und Ryzen 5 5600X pünktlich zum NDA-Fall ausführlich getestet.
www.hardwareluxx.de
Even the biggest AMD fanboys from AdoredTV admitted, that Zen3 gaming performance is overhyped.