Mistake #1: You're NOT doing the Tabata protocol.
Mistake #2: Tabatas have not been shown to be more effective for fat loss than any other type of circuit training.
Explanation of these points can be found here: The Tabata Myth » Blog » Robertson Training Systems
My comment on the post was this,170% VO2max" is impossible. It is as impossible as the nonsensical expression "supra-maximal exercise". There does not exist a VO2 max over 100% and there does not exist "supramaximal exercise". I guess to some extent that is also what Marc Young is suggesting , which is correct.
The other points he raises, are also scientifically correct, in that he is not rejecting the protocol, not claiming it is not superior, but mainly saying that you can't arrive at that conclusion without a proper research design under strictly controlled laboratory conditions. In that, he is scientifically correct.
I do not know if one can conclude that he is really "dispelling a myth". He is mostly pointing out the common errors when nonscientists start making pseudo-scientific arguments. To some extent, it is probably logical that nonscientists make such a mistake, otherwise there would not be any need for scientists to do science as anybody else would be able to do that equally well.