Yeah some of those deltas have those 40% improvements but averages at 16 to 17% when you take out gaming from equation. Hopefully Zen5 3d can significantly improve on the later.
AMD promized around 17%, everything seems to be OK. More testing https://www.phoronix.com/review/amd-zen5-avx-512-9950x
Intel fanboys may argue how AMD messed up despite fact that adding AVX512 support for software takes around few seconds.