In terms of market share, Open AdExchange is clearly lagging behind, losing to RetailMaven in all segments.
Open AdExchange has better usage coverage in more websites categories. Including Shopping, Business & Industry, Sports, Tourism and 15 other categories.
RetailMaven hasn't got a lead over Open AdExchange in any websites category.
Open AdExchange is leading in most countries, including Denmark, Norway, United Kingdom, Sweden and one other country.
RetailMaven is leading in Philippines, Italy and France.