Review on SRAM Centerline CENTERLOCK Black 200Mm by Emmanuel Winschel

I wanted a second set of wheels for my Specialized MTB. When selecting a rotor, the Sram brake centerline indicates the outer circumference, but is not the standard for the six-hole inner circumference. For example, the front grip of a bicycle indicates the number of teeth and the inner circumference. Anyway, I ordered a 200mm centerline Sram disc and it didn't even come close to my wheel hub. I had to match the picture and ordered one from China (six bolts, Sram center line 200mm) and it fitted - obviously Sram makes different internal diameters but I can't figure out how this size is stated? I gave this a four for confusion? mine or hers? ?Central locking?compared to the usual six bolts? This device needs more documentation to explain it.