That's really an Apples to Oranges comparison since Macs and PCs aren't comparable. Yes you could run Windows in BootCamp but it isn't tuned for that and is actually hampered. It would be like making a Surface Pro a hackintosh and using that as a basis for comparison.
Comparing Edge on Windows to Safari on macOS is apples to apples. Browsers running on an OS. I
d be really interested in this comparison, since Apple's big selling point is being apple to specialize since they control the hardware. If Edge can come close or beat them on more diverse hardware, that would be very impressive.
Not quite. I imagine Windows isn't well optimized for a MacBook Pro, Apple isn't going to go out of their way to squeeze every drop of efficiency out like they do on OS X.
The MacBook Pro is standard x86 hardware nowadays using off the shelf parts available to most manufacturers (except maybe the chassis and display). Do you know if there's something else special about them?
> you could run Windows in BootCamp but it isn't tuned for that and is actually hampered
How is bootcamp'ed windows hampered? It works perfectly fine for me. In fact, it's better than many Windows laptops I've used because they almost all ship with so much bloatware on them.
The HW has proprietary power management features that Windows cannot take advantage of. For the end user it's probably no big deal, but I think the commenter you replied to is right - power management is a delicate dance between hardware and software, and not all hardware is accessible from all software on every platform.
"Can't" and "won't" are distinct; if Apple doesn't want to write e.g. Power Nap drivers for Windows, Microsoft could certainly do it. (I'm surprised they haven't; Windows has the incentive to work well everywhere much more than Macs have an incentive to run everything equally well.)