Well, there's your answer. "As thin as an AAA battery" is about twice the thickness of an AAA battery. Simple.

Not only that but the featured image is purposely placed on a dark surface with shitty lighting to give a much thinner impression.

Look, I want my laptop to be as thin as a AAA battery as bad as the next battery enthusiast but going around claiming a laptop is AAA battery thin when it clearly is barely AA battery thin then it's time to go back to the drawing board.

Probably in the same way that the Macbook Air was only .6cm thick and the world's thinnest laptop despite being .09cm thicker than the Mitsubishi Pedion which was a consistent 1.84cm thick. I believe it's called iMeasure.

The grey plastic(?) parts when put together are about as thin as a AAA battery. The bottom black parts aren't, but if you're in a dark room or something then you won't notice. You might even think your laptop is hovering! Just imagine how you could entertain guests!

Probably excluding the foot pads it would be comparable...

Maybe you are just looking at the AAA battery the wrong way up..