Measurements provide static evaluation of a component's ability to reproduce accurately some input signal. Problem is that most measurements are simple sines and don't adequately convey meaningful information on dynamic behavior. Further, the simpleton's approach of lower distortion measurements must be better completely ignores the case where certain specific distortions are actually enjoyable, even preferable. Currently the only method for evaluating dynamic performance involves actually listening with ears, not eyes. The site to which you refer is absent the ability to achieve higher level cognitive function in understanding more complex concepts such as these.