Most of those systems sit at idle, when they are on at all. Idle power is not the same as TDP. The idle difference is not so great that it's a big deal.
It's not apples vs apples. Literally and figuratively. The I/O or board features on PC boards will eat power. So you will end up with a 15-30 W idle vs probably 5-8 for the Mac. I doubt the PCIe on the pro does much to the power unless there is an extra I/O die on system, you need active chips to eat power. That is vs Intel.
AMD will add a bunch more watts to the idle number as their multi CCX CPUs just eat more power at idle. You'll be closer to 30-45 W idle. This is a guess, it's widely acknowledged but not really quantified that I've found.
AMD monolithic dies are more in line with Intel. IE the laptop/mini PC line will be nice and low.
The difference is vastly diminished when you add the display that's using 80 Ws. So that's 85 vs 100 W total system power? 15% difference that gets bigger when you peg your processor.
Apple numbers are better in pretty much every way on power. But we're talking a handful of watts. Even at really high power rates it isn't going to add to up much.
Sources: I have a Mac mini and an Intel raptor lake desktop. I take measurements. And I have read various sources. This is my best information.