One thing I have noticed upon further inspection is that the uppercase cymbals look to possibly have a different hammering process. Although, the lathing looks the same. Here are demos of my lowercase and uppercase hi-hats....
https://youtu.be/XSDa8I_t73E?list=PLuKK-5_kq8OSz_AXA0sVKsIc0oUFIHIa7
https://youtu.be/XSDa8I_t73E?list=PLuKK-5_kq8OSz_AXA0sVKsIc0oUFIHIa7