Ad Butler is leading in Top 100K Sites and Top 1M Sites.
Ad Butler has better usage coverage in more websites categories. Including Business & Industry, News & Media, Arts & Entertainment, Sports and 113 other categories.
Rovion hasn't got a lead over Ad Butler in any websites category.
Ad Butler is leading in most countries, including United States, United Kingdom, Canada, Russia and 75 other countries.
Rovion is leading in Portugal.