ContentClick is leading in 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 99 other categories.
ContentClick is leading in Sports, News & Media, Soccer, Software and 26 other categories.
ContentClick is leading in most countries, including United Kingdom, Russia, Ireland, Germany and 21 other countries.
Shopzilla is leading in United States, Canada, Malaysia, Brazil and 19 other countries.