How did I miss this post?
I have not called in any cougars that I know of, but I do call in cougar country.
As for bears, I have called in over 2 dozen and half of my 14 kills have been with calls.
I would have to mostly agree with your "theory" (when did you develope it? 'cause I have developed the same theory, ..so if you can tell me the exact date and time, then I will tell you when I came up with it as well...LOL)
A couple instances of difference.
I have had small sows come in angry and teeth popping (I am assuming they think a cub is being hurt) as well as having a 7ft 400lb+ boar come in silently while using a predator call.
Now when using a cow/calf elk call both sows and boars have come in silently
one big boar was "heel-toeing" it.