iPad + KBD vs Windows 8 Hybrids

I've seen a lot of iPad users very enthusiastic about having succesfully transitioned from Laptop and desktop users to been 90%+ iPad users.

For you guys, what's the main advantage of iOS over Windows 8/RT hybrids?

I've a feeling tha the defaults will be apps and display, and some may complain about the duality of Windows 8. Apps and display I understand but you don't have to use the desktop at all if you don't need to, in fact, none of the features of the Windows desktop (file explorer, rich control panel and task managers, full desktop apps) are even avaliable on the iPad or Android tablets, neither you are required to use it at all if you so wish.

Let the OS clash begin!