In terms of market share, Open AdExchange is clearly lagging behind, losing to Unicast in all segments.
Open AdExchange has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Shopping, People & Society and 29 other categories.
Unicast hasn't got a lead over Open AdExchange in any websites category.
Open AdExchange is leading in most countries, including Denmark, Norway, Sweden, Canada and 7 other countries.
Unicast is leading in Brazil, India, Great Britain and United States.