Kind of odd calling the 5350 the highest end AM1 product, when even a simple search should reveal AMD has already released the 5370 (not easy to get yet), and has it listed on their web page. I'm pretty sure this should have been included in the article, since it runs at 2.2 GHz stock, also at 25 watts.
I have the same motherboard and processor (I'm actually using it now), and it's definitely driving in the slow lane. Not nearly as bad as Intel's Atom line, but you'll never confuse these processors with the higher end ones either.
Also, one mistake most of the authors make,and one which was made here, is comparing processor prices and then thinking it's fair to compare those that have the same. No. Even a little thought would tell you the Kabini is an SoC, and can be used in less expensive motherboards by virtue of having more on the die itself. That makes the die more expensive, but the savings come when buying the rest of the platform.