>>53553754OP is saying the sketches in heath's journal are interpretations of partial glimpses he caught of the paradox pokemon, and that it may be the same case with walking wake as well. You can see the photograph shows only the blurry top of great tusk from the side, thus Heath's sketch only ended up partially accurate.
I assume op brought this up because many people were complaining about walking wake not matching the illustration when it was revealed.