@curiousjim well Apple inasmuch as I don't like their business practices are one of the few conglomerates that actually does research into human hearing, physics of sound, HRTF modeling and psychoacoustic phenomenon.
So no I'm not surprised. The headphones people know about how good the Pro2 is and have for years now.
This review is a great watch - https://youtu.be/9kTOvdo_6RU?feature=shared