AdAction is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
AdAction has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Marketing & Advertising, Internet & Telecom and 79 other categories.
Shopzilla is leading in Shopping, People & Society, Consumer Electronics, Clothing and 64 other categories.
AdAction is leading in most countries, including Sweden, Norway, Netherlands, Denmark and 42 other countries.
Shopzilla is leading in United States, India, Australia, Canada and 17 other countries.