Marktest is leading in Top 10K Sites and Top 100K Sites.
Uptrends has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Internet & Telecom, Travel and 23 other categories.
Marktest is leading in TV & Video and Newspapers.
Uptrends is leading in most countries, including Netherlands, United States, Belgium, India and 14 other countries.
Marktest is leading in Brazil, Portugal and Morocco.