SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
SpotX has better usage coverage in more websites categories. Including News & Media, Arts & Entertainment, Autos & Vehicles, Car Buying and 102 other categories.
ViralBuzzer hasn't got a lead over SpotX in any websites category.
SpotX is leading in most countries, including United States, Germany, Netherlands, Spain and 46 other countries.
ViralBuzzer is leading in Slovenia and Serbia.