The realistic textures just don't work in pokemon, imo. Specially if they keel the same models.
Like so many important shapes are made of hairs split up in weird impossible ways, if you put a realistic texture over it, it'll look like a plushie with fur, not an alive creature
Even beyond the difference in style, with SV going for a more realistic art style for the Pokémon, the colour contrast difference between Z-A and SV is also massive.
Not sure which I prefer to be honest