BotW is an amazing game and totally deserves the title "best game of the decade". The Last of Us is a good game. It has a great story and decent gameplay, and I can see that story-oriented people would rate it very highly. Super Mario Galaxy 2 is waaaaaay too overrated. It's only an ok game. It's not even is good as Super Mario Galaxy 1 which is also overrated.
I've never played the Witcher 3. It's only my short list of games to try this year.