At Advertising Week, Publicis Groupe's Arthur Sadoun pressed on revenue decline

Publicis Groupe’s Arthur Sadoun was put on the hot seat on Tuesday when he joined his first-ever Advertising Week New York fireside with Wall Street Journal Advertising Editor Suzanne Vranica. The Publicis chairman and CEO was pressed on everything from the holding company’s steady decline in organic revenue (it did post a tepid 0.1 percent organic growth for the recent second quarter), to its ability to effectively integrate Epsilon (the data marketing firm it acquired for $4.4