AdTotal is leading in Top 10K Sites and Top 100K Sites.
Vocus has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Health and 83 other categories.
AdTotal is leading in Soccer, Chats & Forums, Telecommunications, Humor and 4 other categories.
Vocus is leading in most countries, including United States, United Kingdom, Canada, India and 25 other countries.
AdTotal is leading in Poland, Switzerland, Korea Republic, Ireland and 2 other countries.