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 23 other categories.
MerchantAdvantage is leading in most countries, including United States, Canada, United Kingdom, China and 12 other countries.
WordStream is leading in South Africa, Mexico, Slovenia, Malaysia and 3 other countries.