Yup ! BP nailed it.
That's like saying that the load MUST be in a Nitro 27 case with that stamped on the side, or it won't work. Nothing could be further from the truth.
Trying to exactly duplicate Factory performance, by using exactly the same components as the factory uses, is mostly an exercise in futility, and in most cases cannot be done, due to the factory's use of proprietary items that you as an individual loader cannot purchase. As BP states, don't put too much stock in what's written on the box, as that's mostly Marketing hype anyway.
However, with all this said, it's not too hard to reproduce Factory performance, with available and fully compatable components that are available to the reloader. Doesn't have to have XXX brand powder or ZZZ brand primers or YYY brand Wads to achieve it either. Some brands work better than others, but a certain performance level is NOT dependent on the use of one certain set of components. Many component combinations can and will achieve any given performance level.
So do as you will, but the best advise I can give you is to use the listed book data, giving the performance level you
desire, and go with it. You then have some kind of basis in which to judge what is working for you and what is not.
DLM