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, Arts & Entertainment, Internet & Telecom, Health and 75 other categories.
FredHopper is leading in Shopping, Clothing, Home & Garden, Adult and 7 other categories.
Yahoo Search Marketing Analytics is leading in most countries, including United States, Japan, Korea Republic, Taiwan and 23 other countries.
FredHopper is leading in France, United Kingdom, Germany, Netherlands and 17 other countries.