The MV1 is really designed for use with this
Sony Corporation ("Sony") announced the launch of its measurement service and dedicated software for the 360 Virtual Mixing Environment ("360VME"), a spatial sound technology that uses headphones to reproduce the sound field environment of a reference studio with high precision.
www.sony.net
Where you go to LA, NY, or Tokyo to get your ear profiled for a custom HRTF to your ears for use with this headphone.
Looking at the curve, it’s actually amazing for that purpose. Since the HF if where localization happens, by running that hot, they have more freedom to attenuate the HF to achieve the necessary personal HRTF.
On the other hand, it means hobbyists and audiophiles using the headphones as-is, are getting added sparkle and brightness rather than the full service.