I had plenty of experience with Windows CE based devices - I programmed them for four years writing field service implementations. Did you try using Office or IE on Windows mobile devices compared to either iWork,Google Docs, or later Office for iOS?
Office Mobile and even IE were fine, though I used Opera. This was pre iPhone, and I even had 3G with tethering on the HTC Tytn. Stuff was way ahead of its time, and worked great at the time. There were no alternatives!
I will never call any Apple stuff revolutionary, it's just not. It's an improvement over existing things.