SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Vocus has better usage coverage in more websites categories. Including Business & Industry, People & Society, Health, Internet & Telecom and 66 other categories.
SpotX is leading in News & Media, Arts & Entertainment, Autos & Vehicles, Car Buying and 58 other categories.
SpotX is leading in most countries, including United States, Netherlands, Germany, Spain and 38 other countries.
Vocus is leading in Canada, India, France, Romania and 13 other countries.