As I understand it, the standalone NFTs differ from the tarot deck, in that the tarot deck includes the energies and meanings of the reversed cards, whereas the standalone NFTs don’t. The standalone NFTs are supposed to be the clearest energies of the highest archetype of–say–The Magician. Reversed cards (as well as reversed runes) give us important information in readings, which is the most popular use of the full decks.
Hope that helps.