Marktest is leading in Top 10K Sites and Top 100K Sites.
Scout Analytics has better usage coverage in more websites categories. Including Business & Industry, Health, Science, Computer & Electronics and 12 other categories.
Marktest is leading in TV & Video and Newspapers.
Scout Analytics is leading in most countries, including United States, United Kingdom, Russia, Belgium and 6 other countries.
Marktest is leading in Brazil and Portugal.