Loved the review. I'm a fan of these little stoves and it's nice to see them compared in a systematic fashion.
I myself am a happy owner of a BushBuddy and would never trade it in. As a stove-like substitute, it's winner: you can set it on top of the duff, burn a handful of twigs and have your meal with a minimum of wood-burning fuss, especially in LNT areas.
But once we're in wood-burning territory, I think there's room in the comparison for a well-built cook fire / tripod. I've invested a considerable amount of time (and inhaled more smoke than is healthy) working on the technique and can usually bring half a gallon to a boil about 20min after starting the whole process, using only a couple of large handfuls of pencil-sized twigs (weather permitting, of course). Considering the time-advantages/scalability over any of these stoves, it's my preferred method where legal (which is anywhere a wood-cooker is legal).
A cook-fire also has the safety advantage of forcing you to build it in the proper place, and take the proper precautions with wood burning. And as with any wood-burning, the practice makes the woods into the source of your safety and comfort, rather than the enemy.
I am always on the lookout for new technology, and wood-burning stoves have come a long way--especially for people who use wood daily to cook. The BushBuddy is a piece of art in both design and operation, and I will continue to use it for aesthetics alone. But for short-term, single-pot outdoor expeditions where fires are legal and wood available, I'm not yet convinced that there are enough advantages to recommend these tiny stoves over a tiny, well-constructed cook fire.