ClearSaleing is leading in Top 100K Sites and Top 1M Sites.
ClearSaleing has better usage coverage in more websites categories. Including Travel, Accommodation & Hotels, Shopping, Children and 27 other categories.
Marktest is leading in Newspapers and Music & Audio.
ClearSaleing is leading in most countries, including United States, Canada, Spain, France and 23 other countries.
Marktest hasn't got a lead over ClearSaleing in any country.