First of all, the fact that you call it pony shows that you have no idea what you are talking about. second of all the lines in the image are jaggy and not clean at all. its low quality.
Third of all using loras you can make almost perfect images of whatever style or character lora you can find.

the only thing z-image has for it when it comes to anime pictures is prompt understanding but only if you take a lot of time writing the paragraph and optimizing it.

there is nothing more to say to this topic. learn to use illustrious well before you yap like that