Engineers (like Sean Olive and Oratory) who have already been able to speak about this have already explained that the material, price or "arrangement of the drivers" does not necessarily make one headphone technically better than the other in terms of speed, decay or something of that order.

For those of us who just want to know about sound quality, any headphone technical result is show in the frequency response graph and the THD graph. Remembering that most headphones on the market do not have THD high enough for us to be able to hear, for this reason we have more frequency response graphs available than THD graphs on the internet.