Answer to Q9

Tokyo made its pitch well. It has held three Olympics (one summer and two winter), so there's no question of whether Japan can handle it. Its bid motto was: a safe pair of hands. But there were questions about whether Japan could hold its Games with verve and passion.
"Previous Tokyo bids had been praised for their competence but criticised for lacking passion. That was not an accusation that could be levelled at them this time, with the urbane Princess Takamodo breaking with royal protocol to travel to Buenos Aires and lobby on behalf of the bid, and Mami Sato – a Paralympic athlete who saw her hometown devastated by the [2011] tsunami – delivering poise and passion," writes The Guardian, a British newspaper.
Japanese Prime Minister Shinzo Abe also emphasized a point that made the London 2012 Games such a notable success. Just as London organizers promised to make their Games a gift to the world rather than primarily a statement of British patriotism, Mr. Abe noted that the 2020 Games would be Japan's way of thanking the world for the help it gave Japan after the 2011 tsunami.
The lingering effects from that tsunami appeared to be the only lingering question for IOC voters. Despite fresh reports of radioactive seawater flowing from the damaged Fukushima power plant into the Pacific, however, IOC voters appeared to accept Abe's statement that the crisis had never – and would never – threaten Tokyo 150 miles south.
Tokyo Olympic organizers have even spoken of ensuring that the pre-Olympics torch relay passed through the area as a testament to its efforts at revival.
“It was a very good decision," Denis Oswald, an IOC member from Switzerland, told Around the Rings. "We go on the safe side after two Games where we have some risks, Sochi and Rio. It is nice to have Games where we are sure the organizers will deliver. It is technically a good bid, very concentrated.”

Citation
2020 Olympics: Why did Tokyo win Summer Games? (+video) , Sep 2013 Retrived July 21 2016