I honestly don't know where that info comes from, and I don't know of any basis for it. They should be installed as they are engineered for the particular engine.
Just know that with moly faced top rings, the correct bore and hone job and non-synthetic oil for the initial few hundred miles, it is about 98-99% guaranteed to have good ring seating. They aren't right for some severe apps, but for your use, it is almost an insurance policy. That is why I am mentioning this.... one less thing to worry about at start up.
I am kinda surprised that there were no markings on the rang packs or in the box..
I honestly can't recall ever seeing rings with the "TOP" printed on them so that may be the case. I just don't KNOW that is the case and I never assume anything with rings. Rings get flipped and swapped from time to time, and the wrong info has come out on FABO before.
