Marktest is leading in Top 10K Sites and Top 100K Sites.
Uptrends has better usage coverage in more websites categories. Including People & Society, Business & Industry, Arts & Entertainment, Shopping and 56 other categories.
Marktest is leading in TV & Video, Newspapers and Soccer.
Uptrends is leading in most countries, including Netherlands, Germany, Russia, Belgium and 16 other countries.
Marktest is leading in Portugal and Brazil.