I'm not sure how your comment is relevant. Brakenshire suggested that you could buy a type of cheese that's marketed as a specific kind of cheese, only to find that it is completely different in consistency, texture, and flavor. I'm saying that's not likely with parmesan cheese due to the fact that you can see it. I've had Parmigiano-Reggiano and a multitude of other less authentic Parmesan cheeses, 100% of the time if it has looked similar and been marked as parmesan it tasted like it was the same general type of cheese as Parmigiano-Reggiano, even if it wasn't as good. He was describing an experience where the cheese tastes nothing like what its supposed to because it is something completely different.
The packaging is relevant because its impossible to make the same mistake with Parmesan cheese because if it looks like a block of parmesan cheese its going to taste very similar to parmigiano-reggiano.
I don't recall ever saying that its the same thing as officially certified and/or marketed parmigiano-reggiano. Perhaps you should read comments and the comments they were responding to more closely.