Usablenet is leading in Top 100K Sites and Top 1M Sites.
Vizu has better usage coverage in more websites categories. Including People & Society, News & Media, Arts & Entertainment, Technology News and 69 other categories.
Usablenet is leading in Shopping, Consumer Electronics, Sports, Food & Grocery Retailers and 19 other categories.
Vizu is leading in most countries, including Indonesia, Brazil, India, Canada and 14 other countries.
Usablenet is leading in United States, United Kingdom, Spain, Italy and 3 other countries.