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 88 other categories.
Optimatic is leading in Games, Online, Video Games, Fashion & Modeling and 8 other categories.
Vocus is leading in most countries, including United States, Canada, United Kingdom, India and 27 other countries.
Optimatic is leading in Peru, Argentina, Turkey, Spain and 17 other countries.