Experian Marketing Services is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Quisma has better usage coverage in more websites categories. Including Shopping, People & Society, Arts & Entertainment, Business & Industry and 53 other categories.
Experian Marketing Services is leading in Autos & Vehicles, Car Buying, TV & Video, Health and 11 other categories.
Quisma is leading in most countries, including Germany, United Kingdom, Poland, Austria and 18 other countries.
Experian Marketing Services is leading in United States, Italy, Brazil, Canada and 13 other countries.