In terms of market share, Open AdExchange is clearly lagging behind, losing to Visible Measures in all segments.
Open AdExchange has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Shopping and 31 other categories.
Visible Measures hasn't got a lead over Open AdExchange in any websites category.
Visible Measures is leading in most countries, including Russia.
Visible Measures is leading in Russia.