As owner of multiple AMD and Intel CPUs i feel that situation is not as clear cut as You put it with power. For casual desktop user/gamer, i think even 5950x vs 10900K will consume similar total system power over time.
Thing is, ~5ghz is 15-20W affair on AMD and ~25W on Intel per core. So casual gaming or web browsing is not that different and only when rendering or compiling 24/7 AMD's efficiency will be fully realized.
Where AMD suffers is idle power consumption, esp with 2 CCD chips and low load regime things are frankly not rosy and i feel for my average desktop usage and gaming, AMD would come out not that far ahead in power efficiency.
Now where AMD really shines is when tuned for ~4-4.4Ghz clocks, now that is the efficiency Intel's chips can't really touch, but further clock scaling and esp stock boosting algorithms waste power big time.
EDIT: not discussing servers here, nor mobile, just Desktop as it applies for 99% of users + dGPU.
For me it is pretty clear cut. I can fully load the GPU (a 3090) and the CPU (5950X) in my machine and the total system power used will be under 600W.
Much of my work involves multicore workloads.
Alder Lake will improve things in this area, but with PL2 at 241W (without AVX-512) I have concerns.