MerchantAdvantage is leading in Top 100K Sites and Top 1M Sites.
WordStream has better usage coverage in more websites categories. Including Business & Industry, People & Society, Relationships & Dating, Autos & Vehicles and 41 other categories.
MerchantAdvantage is leading in Shopping, Home & Garden, Health, Products & Shopping and 20 other categories.
WordStream is leading in most countries, including Netherlands, Great Britain, Canada, Switzerland and 13 other countries.
MerchantAdvantage is leading in United States, Spain, Qatar, Lithuania and 6 other countries.