druck: Those are woefully inaccurate. A much better way to test these devices is to plug them directly into a high-quality DC bench supply, as otherwise you're also testing the efficiency of the PSU, which isn't what you're interested in as it's a separate device that you can always replace with something better.
My A9 uses a little more than shown here (around 4-6W) when idling, but uses upwards of 10W when turning on while spinning the hard disc up.
Nice review, though. That koolu thing looks cool - idea for home servers and the like.