Which was what I was alluding to, the benchmark article was just easier to find. I don't know what Microsoft can really do other then allow Windows for ARM to run via virtualization mode (it not think booting into it is really an option). They need an ARM champ that make their OS shine until they can write a better version and right now the M1 Mac is it.
Microsoft has to change their licensing model for WoA. Right now, the WoA license limits availability of the OS to companies who build Windows-based machines. This is what Apple was referring to when they mentioned that it (running WoA on an M-series Mac) was up to Microsoft. Microsoft would most likely need to move to a licensing model closer to what they already use for x86 versions of Windows in order to open up the availability of that OS to the Mac audience.