Software, primarily. But, more relevant to this essay: I don't know of another tablet with a screen the size of iPad's, a 10 hour battery, and a shell that's 1

Software, primarily. But, more relevant to this essay: I don't know of another tablet with a screen the size of iPad's, a 10 hour battery, and a shell that's 1.5" thick. (Not that it doesn't exist, I'm just not aware of it.)