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 Comparative Claims Resurface in Tampon Wars As U by Kotex Gains Share, Tampax Pearl Fires Back That it Offers '30% Better Protection.' But How Far Can This Go? By Jack Neff, Published on July 25, 2011 5 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.