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, Internet & Telecom, Arts & Entertainment, Health and 80 other categories.
FredHopper is leading in Shopping, Clothing, Home & Garden, Adult and 9 other categories.
Yahoo Search Marketing Analytics is leading in most countries, including United States, Japan, Taiwan, Korea Republic and 21 other countries.
FredHopper is leading in United Kingdom, France, Germany, Netherlands and 20 other countries.