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 73 other categories.
Usablenet is leading in Shopping, Accommodation & Hotels, Travel, Clothing and 16 other categories.
Vizu is leading in most countries, including Indonesia, India, Russia, Australia and 11 other countries.
Usablenet is leading in United States, United Kingdom, Italy, Canada and 8 other countries.