I like both ZZZ and WuWa.

ZZZ comes out ahead in some parts of the game, mainly the combat and designs of characters is really intricately put together. The models having UV maps that specifically match straps so it doesn't stretch poorly, the animations are really gorgeous and I wish I could watch them in slow motion with a camera able to see different angles.

WuWa has really wonderful areas to explore, gorgeous skyboxes, the effects can really be quite the spectacle as well. I do think the animations are decent as well. Combat is still fun, but you get interrupted a lot with some enemies before you can pull off certain combos.
Also having a weapon banner guarantee is quite nice, even if I have to go to hard pity at times... Better than going to hard pity with a 75/25%.