On the low end in the U.S., Amazon is making a killing with their bastardized not quite "Android" Fire Tablets. Chrome OS based 2-1s are doing pretty well though.
http://www.businessinsider.com/google-android-tablets-future...
Looks like at least 32bit x86 apps will run. http://www.zdnet.com/article/windows-10-on-arm-it-will-be-mo...
Edit: found this ARM compatibility chart in the zdnet article
https://zdnet3.cbsistatic.com/hub/i/r/2018/02/19/b2c823f6-76...
And I get that you use x64 Windows for the compatibility, but this isn't supposed to replace that Windows. This is a product for an entirely different market: the market for tablets and netbooks.
With Google itself pushing PWAs, Microsoft will finally get Google app support, whether Google likes it or not, and with any luck, this might start to finally erode the app gap that protects the two incumbents.