Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Vocus has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, News & Media and 81 other categories.
Optimatic is leading in Games, Online, Video Games, Fashion & Modeling and 10 other categories.
Vocus is leading in most countries, including United States, India, Great Britain, France and 43 other countries.
Optimatic is leading in Venezuela, Colombia, Hungary, Indonesia and 8 other countries.