What are the main advantages of Windows OS for smartphones?

Here are a few advantages of an Windows Operating system:-
1. Tiles:-
Compared to widgets and icons in Android and iOS respectively, Windows has "Live Tiles" which are way better in functionality and customization options.
2. Cortana:-
The new presentation from Windows is at par with Google Now.
3. Sync:-
Ability to sync seamlessly with your PC and phone.
4. MS Apps:-
The microsoft products like office documents and Outlook work nicely than on non Microsoft OS.
5. One Drive:-
A great cloud storage has a lot to offer in comparison to Google Drive.
6. Security:-
On the security front, Windows OS is comparable to iOS. All apps are reviewed and approved by Microsoft.