What you said/wrote make so much sense, the Apple Silicon (Desktop/laptop) is yet to be seen. It is far to early to comment positively or negatively about the Apple Silicon. Let's wait till next week, that only 7days from now.Is that your educated guess or based on a leak? The last leak/rumor I remember had stuff like 12-16 cores laid out for various Macbook entries.
People seem to equal Intel clock/core count with ARM clock/core count. ARM produces a fraction of the heat and requires a fraction of the power your every day Intel CPUs do with their crap 14nm++++. The same chassis with AS could go overdrive with CPU clocks and core count due to the vastly superior cooling mechanisms than passively cooled tablets and smartphones.
I'll also reiterate: we have yet to see a single info drop on what the Apple Desktop class Silicon has or looks. The A12Z from the DTK is not representative as it's a mere proof of concept that macOS runs on ARM / A chips.