For me, overall best graphics, it's a tie between Zelda BotW, Mario Kart 8 and Xenoblade X
Other outstanding WiiU games in this department are Bayonetta 2, Pikmin 3, Paper Mario Color Splash, Art of Balance, Assassins Creed IV, Captain Toad, Fast Racing Neo, Smash Bros and Mario 3D World
Chuck Norris can kill two stones with one bird.