ADMAN is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Silverpop has better usage coverage in more websites categories. Including Business & Industry, Shopping, Death, Health and 95 other categories.
ADMAN is leading in News & Media, People & Society, Arts & Entertainment, Internet & Telecom and 36 other categories.
Silverpop is leading in most countries, including United States, United Kingdom, Australia, Czech Republic and 46 other countries.
ADMAN is leading in Greece, Cyprus, Netherlands, Denmark and 3 other countries.