FredHopper is leading in Top 10K Sites and Top 100K Sites.
Yahoo Search Marketing Analytics has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Health, Arts & Entertainment and 88 other categories.
FredHopper is leading in Shopping, Clothing, Home & Garden, General Merchandise and 5 other categories.
Yahoo Search Marketing Analytics is leading in most countries, including United States, Japan, Taiwan, Korea Republic and 22 other countries.
FredHopper is leading in France, United Kingdom, Netherlands, Germany and 20 other countries.