It is not, and comments like this are what lead to so many "frustration" post by newbies here. These are NOT mini laptops, they just aren't, and were never designed to be. They are certainly capable machines but they have serious limitations when comparing them to laptops.
So, better battery technology is the issue? Seriously, I've never been in a meeting room in the last 5 years or so that everyone wasn't plugged in with their laptops. I think this battery thing is a non issue in the context we are discussing. Long battery life is great when you are out and about, not so much an issue when you are in the office environment.