Ad Spirit 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, Clothing and 81 other categories.
Ad Spirit is leading in Business & Industry, Sports, Soccer, Internet & Telecom and 61 other categories.
Ad Spirit is leading in most countries, including Germany, Austria, Spain, Switzerland and 21 other countries.
Shopzilla is leading in United States, India, Canada, China and 18 other countries.