Thank-you for explaining the import of the hole punch example. The way you've phrased the point here though has me wondering if you're suggesting that the fundamental difference between BAs & DDs can be adjusted for by EQ. (ie., poke a hole in the tip, EQ up the bass to compensate), which is something I have found not to be the case. I could see how one might use EQ on a BA IEM to simulate a DD IEM but it would be just a simulation and would lack the feel, texture, weight etc. of the real thing.
Admittedly I do not, hence my earlier question. Part of my credo in this hobby is to encourage everyone to participate in it in a manner consistent with their own temperament and in a way through which they may find personal fulfillment. There is more than one way to skin a cat, and many ways to approach, assess and enjoy audio gear. For some, this involves fixating on measurements-- and I am happy for those who find this approach fruitful For myself while FR curves can be interesting to look at after the fact, I find the measurebator approach too dry, technical and ultimately unfulfilling. I'm not saying it's wrong, it's just not right or thus far particularly useful or interesting for me personally. It's ultimately the intangible things that stir my soul give me the sort of subjective responses I am seeking-- for this my own ears have proven to be the best and only self-sufficient measurement rig I need. YMMV etc.
PS - clearly there is an audience for and an appreciation of the work you guys are doing, so keep up the great work.