I think The Wind Waker is the worst but still good: worst dungeons (and the last two feel like escort missions with you having to protect Medli and that little leaf-like thing), the ocean is huge but it feels empty because most islands are tiny and many of them feel pointless (just look at the eye-reef islands, they're all practically the same and don't have nothing interesting), sailing is tedious because you have to change the wind direction every time you want to change the direction of the boat, the game is really easy and a lot of time you'll be doing nothing more than pushing the analog stick to move the boat from one island to another, it lacks any challenge and the biggest of all flaws: the horrible tri-force parts fetch quest, where you have to find the maps used to find the maps used to find the tri-force pieces...
Edit: funny how some people just say "x" is the worst but don't give any arguments
