However, it is a somewhat contradictory machine. First, it's ultra portable, but offers limited drive space, so you'd expect the internet to be essential. Well, no. It doesn't have built in cellular receiver, so an iPad simply works better. The iPad is better in terms of form factor too as you can use the iPad standing, sitting, lying down, upside down, free falling, etc. The 11MBA is only comfortable while sitting at a desk. You can argue that it can be used in those other situations as well, but I'd say that it is uncomfortable and unnatural in those situations.
"But an iPad is not a full-fledged computer", some might say. Well, what can an 11MBA do that the iPad cannot? It has no SD card slot, so it's not a photo editing machine. Base model and many subsequent models afterwards can't be used for video editing due to limits in hardware. Can it do programming? I'm not sure, as I don't do that stuff. Let's say it can and is probably the only thing it can do that the iPad cannot.
Not only screen size, but track pad size as well. Who wants a smaller track pad? That's terrible.