From the past records one thing can be said about Australia no matter how bad they perform in the opening stages they try to perform at their best in the finals. One thing is very important here when Australia decided to field the toss this decision played a very important role here. Moreover, due to the presence of a lot of moisture/fog in the Indian skies during the afternoon, Australia had an advantage in batting at night. Besides, there are many smaller reasons why Australia won the title for a record sixth time.
Australia team always plays well in every final game. As a result, when Australia reached the final, I understood that Australia is going to win another cup despite being a strong opponent India. Team India had performed well in every match of the entire tournament and came to the finals, due to which Team India had a lot of confidence and this extra confidence did not expose their team's weaknesses earlier.
Interestingly, the toss was a huge factor in this match, and Rohit Sharma said after the toss that even if he had won the toss, he would have opted to bat first! So this shows how tactical Australia was to play the final, because while India could not read their home conditions correctly, Australia read it correctly. Australia's first two match losses exposed all their weaknesses and they worked on them. And Australia completed their campaign by winning the World Cup.