How should Nevzat Aydin make the final choice, given such a great divergence in opinion exists?

Yemeksepeti.com, founded in 2001 by Nevzat Aydin, is the first online food delivery portal in Turkey based on a business style similar to that of waitersonwheels.com in the United States. The company works with local restaurants and big food chains throughout Turkey to offer various cuisine options to consumers. Yemeksepeti currently has more than 11,000 contracted delivery restaurants across 81 cities in Turkey. Consumers benefit from a large choice of restaurants, the convenience of online ordering, and the customer service that ordering from Yemeksepeti.com guarantees; restaurants access a much broader customer base.
When assessing the options of a new advertising campaign, four teams within the buying center participate: IT, marketing, finance, and the board of directors. The IT team is directed by a young technology innovator. This department is keen on experimenting with new technologies, especially those surrounding the smartphone. It manages the advertising function as follows: more technology to keep up with the young audience.