RetailMaven is leading in Top 10K Sites and Top 100K Sites.
RetailMaven has better usage coverage in more websites categories. Including Shopping, Business & Industry, Games and Online.
Unicast is leading in People & Society, News & Media, Arts & Entertainment and Performing Arts.
RetailMaven is leading in most countries, including Australia and United States.
Unicast hasn't got a lead over RetailMaven in any country.