Marktest is leading in Top 10K Sites.
Rich has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, TV & Video, Internet & Telecom and 12 other categories.
Marktest is leading in Music & Audio, Religion & Spirituality and Newspapers.
Rich is leading in most countries, including Sweden, Norway, Netherlands, United Kingdom and 20 other countries.
Marktest is leading in Portugal, Brazil, Israel, Romania and one other country.