Naw, I ment what I said. Somewhere after 12x that number gets small quick. What do you really do with that number anyway? Scope "X" is .3 bigger, so what? That the ablity to use the scope depends more on the lens grinding and coating than some number that does not factor such in. Without such a factor we may have more of a rule of thumb, but nothing hard.
If we take the Dia/mag=factor. Thus Barksa, SS and Zeiss all look the same. Until we do: (Dia/mag)x factor for light transmission. Or some more meaning full like (40/20)x.96 do we get to a more meaning full number of compare what the scope may really do.
Other wise it is just TMI. We cloud things with stuff that while accurate, have no real usage. What are we really doing with the information? What purpose does the information serve? Does it tell us quality or fexiablity of use? To prevent TMI we have to have USABLE inforation.