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, Arts & Entertainment, Business & Industry, Video Games and 23 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, Canada, Poland and 19 other countries.
Visible Measures is leading in United Kingdom.