AdTotal is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
AdTotal has better usage coverage in more websites categories. Including Arts & Entertainment, Internet & Telecom, People & Society, Career & Education and 16 other categories.
Mass2 is leading in Autos & Vehicles, Business & Industry, Car Buying, Shopping and 16 other categories.
AdTotal is leading in most countries, including Poland, United Kingdom, France, South Korea and one other country.
Mass2 is leading in United States and India.