DoubleClick AdExchange is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Mercent has better usage coverage in more websites categories. Including Shopping, Arts & Entertainment, Business & Industry, Clothing and 61 other categories.
DoubleClick AdExchange is leading in News & Media, Travel, Tourism, Internet & Telecom and 43 other categories.
Mercent is leading in most countries, including United States, United Kingdom, Canada, Russia and 30 other countries.
DoubleClick AdExchange is leading in Germany, China, Turkey, France and 28 other countries.