MerchantAdvantage is leading in Top 10K Sites, 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 40 other categories.
MerchantAdvantage is leading in Shopping, Home & Garden, Health, Sports and 21 other categories.
WordStream is leading in most countries, including United Kingdom, Mexico, Brazil, Malaysia and 7 other countries.
MerchantAdvantage is leading in United States, Canada, Germany, Spain and 5 other countries.