MerchantAdvantage is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
MerchantAdvantage has better usage coverage in more websites categories. Including Shopping, Business & Industry, Home & Garden, Health and 39 other categories.
PriceGrabber is leading in Marketing & Advertising, Government, Children, Music and one other category.
MerchantAdvantage is leading in most countries, including United States, Canada, United Kingdom, China and 15 other countries.
PriceGrabber is leading in Chile.