Your windows OS and Intel processor in your laptop/desktop are built for every type of applications. You can install pretty much any application you want, you dont have to download all of them from Windows app store. But this comes with a price, every application will not run smoothly. While your mobile OS and ARM processor are tailored for certain applications and operations, i.e. they can run a smaller set of applications, but they can do it very efficiently :geek:
If you run only windows store app in your PC with your windows OS, it will be much faster :geek:
Btw, I didnt know they used C for the mobile OS.