We're gonna have to agree to disagree, and this is why. I like that poster. It's colorful, it's stylistic, it's playful, and you can clearly see the DNA from the past material it's building off of. Because I clearly like it and because you clearly don't, we're not going to be able to agree on this issue. Which is fine.
Or at least acknowledge that Japanese animation largely resembles humans.
Realism is not the only qualifier for what is and isn't good art. It can be an aspect of it, but to what degree its embraced is up to the artist and how well the final result is received is up to the person absorbing it. None of these look remotely like real tigers. I think each one is absolutely fantastic though. Their uniqueness helps them stick out to me, makes them memorable.
If I looked at 10 western paintings of tigers, realistically drawn, but with nothing else about them that grabs my attention, I'll quickly forget about them no matter how realistically and skilled they are. It's a balancing act and we each have different preferences as to where we want the fulcrum to be.