Several things here:
The tests seem quite fair, at least as far as they went. As Mike says, he didn't get deep into the "combat usability issues", I think at some point it'd be fun to follow up in that area.
The Mad Dog "chipping" seems unusual. I feel I can say with some certainty that the pine chopping as described would NOT come under Kevin's opinion of "abuse". Mike, I'd really like for you to ship that Dog back to Kevin and have him take a look at the edge; it's barely possible we're looking at a bad heat-treat specimen.
Naturally, with the chipping it would fail the cardboard test - unless you resharpened it first? Clarification there would be appreciated.
Finally, here's my suggestions for a series of "combat functionality tests" which, along with what's been done, would really add to our knowlege:
Time how long it take a half dozen people to shift it between forward and reverse grips and back again. Take the same half-dozen random people (of different sizes), have them throw the tip forward into a Saber grip with the entire arm straight WITHOUT LOOKING - then have them hold it at that point, and see if the tip lines up perfectly with the forearm bones...or measure how far off it is, in degrees. Measure total weight, then measure the balance point - in this size range you want a dead neutral feel.
Now get hardcore. Same six people, same "time the grip shift test" - do it four or five times each...except dip all hands in vegetable oil first! You're looking for dropped blade counts! This tests grip design and feel, and the grip's stability even if covered in blood, a disgusting but necessary concept.
Drop each piece tip-first into an old military flak jacket or other hard-to-pierce material stretched horizontally. This will measure stabbing penetration seperate from human strength, although it'll slightly favor heavier pieces.
This would make for a good start, at least in comparing a bunch of "tip control style" fighters. Heavy-smash fighters are a different sort of beast altogether, typified by Khukuris.
Jim