First thank you for this post, I like when it comes to technical discussions about watches, even if I'm not a specialist.
I could make a comparison with the car industry, taking the example of a F1 high revs engine. The higher revs/minute are, the more difficult is the mastery of the reliability (heat, speed of the parts etc ...)
High frequency in watchmaking, I think, implies more obstacles (I must say I don't really know the real difficulties in low frequencies research). I would believe that a higher frequency caliber implies some more problems as the frictions (thus the lubrication issue) and the inertia of the moving parts becomes hardly yet manageable.
Hence, I believe that the High frequency field is harder to cross and that a watch mastery in this sector is more valuable, technically speaking, than concerning low frequency.
But hopefully, brands can "compete" in either area and I think it is nearly as interesting and I appreciate that some brands decide to explore both paths.
I think I don't have a good enough overall idea of what low frequency implies but visually it sounds great.
My feeling
Cordially,
Mark