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 65 other categories.
DoubleClick AdExchange is leading in News & Media, Travel, Tourism, Music & Audio and 27 other categories.
Mercent is leading in most countries, including United States, Canada, United Kingdom, India and 40 other countries.
DoubleClick AdExchange is leading in Germany, China, Turkey, Spain and 30 other countries.