Voted for Kane Williamson considering this world cup performance of a team . He carried his team in his shoulders and guessed the pitch behavior accurately. He continued from where BAZ left and that is why they are second continuous finalists.
We all have huge tension in life so I believe humour reduces that mental stress we face during our daily life so humans always try to maintain a healthy lifestyle to keeps on their mental level healthy. Like for eg people nowadays uses laughter yoga which has gone mainstream since Dr. Madan Kataria started introducing it to mainstream audience on his SAB TV show.
Kane was below par in finale as far as decision making in crunch situation is concerned.
Still I can't get why he didn't bowl Ferguson for super over. When Boult gone for 15 in last 4 balls he should had trust Ferguson for his raw pace as well as pin point Yorker.