You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract NBC Chief Wants Peacock to Be Judged By 18-to-49 Viewership CEO Steve Burke Gives Preview of Upfront Strategy By Jeanine Poggi, Published on April 07, 2014 0 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.