Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Optimatic has better usage coverage in more websites categories. Including Games, Business & Industry, Arts & Entertainment, News & Media and 44 other categories.
Visible Measures hasn't got a lead over Optimatic in any websites category.
Optimatic is leading in most countries, including United States, Algeria, China, India and 17 other countries.
Visible Measures is leading in Brazil.