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 88 other categories.
Unicast is leading in Performing Arts.
SpotX is leading in most countries, including United States, Netherlands, Germany, Spain and 49 other countries.
Unicast hasn't got a lead over SpotX in any country.