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 19 other categories.
WordStream is leading in most countries, including Netherlands, Australia, Mexico, Belgium and 14 other countries.
MerchantAdvantage is leading in United States, Italy, China, Spain and 5 other countries.