KH looks better it has more stuff and is open world

Wait... Wind Waker is also open world. A rather big open world to boot.

Not really its island based meaning its hub based

Most of the game is covered in ocean, but you still have to travel thru the seas by boat. That doesn`t mean it`s not an open world game. It feels as open world as any other open world games.

Yeah but ocean is easier to programm

Perhaps, but that doesn`t mean the game is not open world. Land or ocean, it`s still a world to explore with a sense of discovery.

The Winder Waker is a fancy HD remaster of a gorgeous high-end 6th generation game. While Kingdom Hearts 3 looks like a proper 8th generation game. Of course it might theoretically run on Wii U but not without graphics taking a massive hit.

Kingdom Hearts has better graphics but Wind Waker has a better style

Was surprised with the games you are comparing but I'd probably go with KH3

The Wind Waker HD is still really nice though