While you are somewhat dismissive about the results, they really only confirm many other studies which found that HIT (High intensity training, what is discussed in the article) training achieves the same effects as much longer endurance training at much shorter times. This has been found for both non-athletes and athletes and in fact training for professional endurance athletes has drastically changed in the last 5-10 years (read interviews with e.g. professional cyclists, they train significantly less, but at much higher intensities than 7 years ago, lots of them have observed this transition).
However, your point about body mass is correct, without making your calorie intake less than your expenditure you will not loose weight. I also recall that there have been some studies that found it might be harder with HIT, because you are hungrier after HIT than low intensity exercise.
However, your point about body mass is correct, without making your calorie intake less than your expenditure you will not loose weight. I also recall that there have been some studies that found it might be harder with HIT, because you are hungrier after HIT than low intensity exercise.