I was just about to comment about dry bamboo as a better test sample. With mention of dry stuff splinters, makes me a believer that guy really did the test. Like what 808BLADE trying to point out, there are many variables in testing or chopping thru bamboo. You try chopping perpedicular thru a dry bamboo on the wrong spot will bounce off your knife. But there are also sweet spots for chopping in that manner. And there are varieties of thin walled dry bamboos that will crush with a perpendicular chop and an angle chop will just make a dull blade slide off. But of course, there is always a sweet spot dry or fresh, thin or thick walled. Just have to find 'em as you go.