FredHopper is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Yahoo Search Marketing Analytics has better usage coverage in more websites categories. Including Business & Industry, Shopping, Internet & Telecom, Health and 85 other categories.
FredHopper is leading in Clothing, Adult, General Merchandise, Chats & Forums and 3 other categories.
Yahoo Search Marketing Analytics is leading in most countries, including United States, Japan, Taiwan, Korea Republic and 23 other countries.
FredHopper is leading in France, United Kingdom, Netherlands, Germany and 20 other countries.