Ceros is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Ceros has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Shopping, Travel and 63 other categories.
Ion Interactive is leading in Games, Video Games, Career & Education, Insurance and 12 other categories.
Ceros is leading in most countries, including United States, United Kingdom, Spain, South Africa and 38 other countries.
Ion Interactive is leading in Egypt, New Zealand, Mongolia, Denmark and one other country.