ContentClick is leading in Top 100K Sites and Top 1M Sites.
ContentClick has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Sports, News & Media and 76 other categories.
Open AdExchange is leading in Real Estate, Law & Government, Computer Hardware, Performing Arts and 6 other categories.
ContentClick is leading in most countries, including United Kingdom, United States, Poland, Russia and 27 other countries.
Open AdExchange is leading in Denmark, Slovakia and Guatemala.