Experian Marketing Services is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Experian Marketing Services has better usage coverage in more websites categories. Including Autos & Vehicles, Arts & Entertainment, Car Buying, People & Society and 22 other categories.
Nextag ROI Optimizer is leading in Shopping, Business & Industry, Marketing & Advertising, Home & Garden and 13 other categories.
Experian Marketing Services is leading in most countries, including United States, United Kingdom, Japan, Canada and 11 other countries.
Nextag ROI Optimizer is leading in Germany, Argentina and Finland.