It's a computer, no matter the device. Real work to me is data input, no matter what one is performing, whether typing, drawing, copy & paste, pushing an open link (which is a command), even making a phone call on a smart phone, etc. How one navigates to get to that point to perform a task is another thing. That's the problem some are having with 8 (in some cases rightfully so), which also entails window sizes of apps and menus. A whole different animal. All based on touch navigation and command menus are in different places than past OSs, so it's more of a learning curve.
Summary: Data input by a human or another machine = real work.