One of the things I primarily love about this deck is that it doesn't contain any human images. I have always found that rather distracting, since there are no decks that have human images that I can relate to on every card. There are always a few (and sometimes many) cards with human figures that simply don't resonate with me on any level.
With animals and images of things found in nature, I can feel the meaning on a more visceral, intuitive level without having to cut through the cultural, social, or stereotypical layers that imbue most other decks. While there are similarities between TWU and RW, I feel this deck enters a new realm with Tarot reading, so I try not compare the two and just let this deck stand on its own.