Bluemetrix is leading in Top 100K Sites and Top 1M Sites.
Bluemetrix has better usage coverage in more websites categories. Including Business & Industry, Travel, Computer & Electronics, Arts & Entertainment and 7 other categories.
Usablenet is leading in Shopping, Food & Drink, People & Society, Autos & Vehicles and 6 other categories.
Bluemetrix is leading in most countries, including Japan, United Kingdom, France, Russia and 36 other countries.
Usablenet is leading in United States, Canada, Puerto Rico, Argentina and one other country.