DoubleClick AdExchange is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Shopzilla has better usage coverage in more websites categories. Including Shopping, People & Society, Arts & Entertainment, Business & Industry and 116 other categories.
DoubleClick AdExchange is leading in News & Media, Travel, Tourism, Accommodation & Hotels and 6 other categories.
Shopzilla is leading in most countries, including United Kingdom, India, Malaysia, Australia and 24 other countries.
DoubleClick AdExchange is leading in United States, China, Turkey, Germany and 16 other countries.