MerchantAdvantage is leading in Top 100K Sites and Top 1M Sites.
MerchantAdvantage has better usage coverage in more websites categories. Including Shopping, Business & Industry, Home & Garden, Health and 35 other categories.
PriceGrabber is leading in Marketing & Advertising, Music, Children, Government and one other category.
MerchantAdvantage is leading in most countries, including United States, Canada, United Kingdom, Italy and 10 other countries.
PriceGrabber is leading in India, Argentina and Greece.