Given that the launch of these processors was scheduled for March 30th, postponing announcement for exactly one month and launch for 6 weeks sounds plausible. However, I doubt the situation with the pandemic will get better by then, especially in the US where it is only just starting – if anything for many states the situation is expected to peak by then, unless a 6-week lockdown is enforced nationwide.
That’s certainly not true. First of all IPC is a per workload metric and the idea that AMD has superior IPC to Intel in every non-AVX workload is for the birds. Also, even if AMD cpus did have such a total IPC superiority (which they don’t) it is only a minor one and is more than offset by Intel’s clock speed advantage. So Intel still holds the single-threaded performance crown in most workloads and anything scalable only up to the number of cores/threads Intel is offering (hence quad-threaded, hexa-threaded, eight-threaded performance especially in an OCed vs OCed comparison).
It should also be noted that AMD’s cpus even if they did have an IPC superiority is not something that should be attributed to the sheer brilliance of their microarchitecture. Zen2 is using double the amount of per core L2 cache (512KB Vs 256KB) and double the amount of per core L3 cache (4MB vs 2MB) compared to Skylake. Substantially increasing the capacity of your CPU memory subsystem is only a trick you can do once per 5-10 years. AMD is running out of cheap tricks and is time to actually improve the computationally efficiency of its core architecture than just relying on throwing more cores and more cache in order to mitigate the inherent deficiencies of its current design.
And by the way, we hear so much about Intel cpus being supposedly insecure against exotic side-channel attacks but the ones who actually get actually badly hacked in the real world (and remotely) are AMD themselves and that with regular attacks! Not exactly confidence inspiring when a company selling cpus claiming to be secure has such a major hack and has their IP Verilog files stolen under their nose.