Wreda and Auckland Tourism, Events and Economic Development (Ateed) worked closely on a lot of things, so the ad would be taken in good faith, he said.
The ad campaign was part of a push to advertise the capital city beyond the numerous visitors for the Auckland region who were already travelling between the two cities, he said.
Ateed general manager of destination Steve Armitage said the confirmaton of most liveable city was a "great award for Wellington, and we'd like to pass on our congratulations".
"Wellingtonians are always claiming that 'you can't beat Wellington on a good day", but for the other 364 days of the year Auckland's world class food and beverage, beaches and natural attractions simply cannot be beaten," he quipped.