The problems come from terminology and mis conceptions that go along with the terms used. You can build a fast actioned rod out of any material, but they won't react or fish the same. Many people refer to a fast reacting blank as a fast actioned blank, than all discriptions go out the window.
Everything is to prone to hype, misrepresentatios and downright lying. To carry a little more line in the air the manufacturer just list the next heavier blank as the weight you want. Than the line manufacturer catches flak because his line now doesn't load the rod correctly for closer work so he does the same thing. Never ending spiral till the CC system was developed. All Hail the CC Data system. Now we need to just use it.