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, Home & Garden and 53 other categories.
DoubleClick AdExchange is leading in News & Media, Travel, Tourism, Accommodation & Hotels and 16 other categories.
Mercent is leading in most countries, including United States, Canada, United Kingdom, India and 70 other countries.
DoubleClick AdExchange is leading in China, Turkey, Germany, Poland and 12 other countries.