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, Clothing, Business & Industry, Games and 51 other categories.
DoubleClick AdExchange is leading in News & Media, Travel, Tourism, Accommodation & Hotels and 18 other categories.
Mercent is leading in most countries, including United States, Canada, United Kingdom, Russia and 47 other countries.
DoubleClick AdExchange is leading in China, Turkey, Germany, Spain and 18 other countries.