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 41 other categories.
MerchantAdvantage is leading in Shopping, Home & Garden, Health, Furniture and 22 other categories.
WordStream is leading in most countries, including United Kingdom, Switzerland, Mexico, Ukraine and 11 other countries.
MerchantAdvantage is leading in United States, Canada, Russia, United Arab Emirates and 8 other countries.