Rankings should always be taken with the requisite ton of salt - its just one person's preference or idea of ideal sound, written down for others to see. Using scientific method in reviewing can be useful, but to me is inherently problematic because you are trying to use measurement to describe something arbitrary that's is interpreted by the brain. For example, you can accurately tell how loud or quiet something is (science), but some people prefer listening louder than others, so you can't predict how two people listening to the same track at the same volume will react without knowing their personal preferences. Also, you can accurately measure wavelengths of light to identify what colour something is, but how can you know what two different people actually "see" in their minds eye when they look at it - their brain may present two entirely different looking "colours" to the different people. Long winded way of saying measurements can be useful, but never more useful than actually listening to something to see if it sounds good. Also, preference is almost as big a connotation as performance when you get into the higher end IEM market - everything is pretty good, but it may not be good for everyone.