If you did your research, I'm pretty sure you would find that you can do all of these things on a macbook.
Check out this Dell 8 inch tablet that does all of these things - http://www.amazon.com/Dell-Venue-Series-Windows-Tablet/dp/B0...
Instead what Dell do is release a 3000 model, with no digitizer and 1GB of ram. I have to assume that Dell are far too afraid of cannibalising their mid-range laptops to produce something truly great in the small tablet space, a very foolish and short-sighted position I think.
UPDATE: Here's an image gallery that I just made showing it in the jacket I'm wearing today, in the pants I'm wearing today and again in a pair of pants that I grabbed out my laundry pile - http://imgur.com/a/hFeDo
Not only does it fit in my pockets, but there's room to spare. Maybe it won't fit in some skinny jeans, but I don't wear tight pants because I'd rather be comfortable. In any case, whether it fits in your pocket or not isn't the point - it is true that Apple doesn't offer a highly portable device that runs a full OS for over 10 hours
Apple simply doesn't offer a device that can compete with this, so not only are they not miles ahead, I can't even see them in my rear-view.