I think these are the videos you are referring to, and I'm not sure I'm seeing what you think you're seeing; or maybe you're not remembering the videos quite correctly?
[video=youtube;bYozOCQM7CI]https://www.youtube.com/watch?v=bYozOCQM7CI[/video]
[video=youtube;TpiMUuhZS80]https://www.youtube.com/watch?v=TpiMUuhZS80[/video]
[video=youtube;i_AtApX3468]https://www.youtube.com/watch?v=i_AtApX3468[/video]
Now, it's somewhat difficult to tell due to how grainy the videos are, but maybe you're referring to the left most MKII in the very beginning of the first video when you mention a blunted tip? However, if you watch the videos again (the magazine test for the mkII is the beginning of the second video), you'll notice that he's not using the left most knife, but it appears to be the right most knife with the broken quillon, which is obviously still rather pointy.
For all those who claim foul play, I suppose there's really only one way of knowing for sure: Perform the tests yourselves, and see what you can come up with.
I'll concede the rounded point is not as easy to see as I remembered it, and it certainly is not 1/8" of the point rounded off, more like 1/16", so I did exaggerate. My appologies to Cold Steel and all those concerned on that...
The problem with seeing the condition of the points is not just the video quality: The knife chosen is black, and it is shot for the test in front of a white background: This means that the "whitish" exposed metal of the edge grind is blurred by the background, so even if the edge is ground rounded near the point, the black finish still looks "pointy".
The only moment I could find where shadows and the background don't play havoc with what you can see is at 0.49 in video #2: Just as the point is about to slip off the ruler, the shadows "equalize" and you can see both the actual metal in the bevels, darkened a little, and how the extremities of this unpainted metal relate to the edges of the blade's black finish: Looking at the frozen image,
after going through the magazine, the point looks like 1 mm is missing (slightly under 1/16"), but more importantly it doesn't look jagged but rounded off, with the black finish still coming to a point, so far less exposed metal at the -really- sharp tip of the black paint than on the sides of the paint.
That being said, it could have been worsened by the steel magazine, and it really isn't as obvious as I initially remembered it...: The slight roundness is suspicious, but barely visible... The other moments you can see the knife don't really count, as the knife's point could have been brought back...
I have to back off on the cheat being obvious, but I think it's there in a small amount, just not enough to call it as clear-cut owing to the background color... Another thing I noted is that the force used must really be excessive, or the Mk II guard quillion would not have broken off: With so much force, it is possible the Tanto could be made to out-perform the Dagger in a complicated object like the rifle magazine, so the combination of excessive force and the rifle magazine could be a genuine result with such a small amount of tip "rounding off"...
The video's conclusion on the snap cuts are wrong, because they are simply wacking flat objects with the edges flat...: A real test would involve a dual motion of a tip prick followed by a slicing cut, once the point is inserted, and this on a soft and sharply rounded target...: They would have had to seriously damage the dagger's point to make it fail to vastly out-perform the Tanto on "real" tip slicing...: I would say that on this they are misleading, but not in a way that is cheating.
Thanks for finding the videos, as I had been looking for them and did not find them.
Gaston