FredHopper is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
w3roi has better usage coverage in more websites categories. Including Internet & Telecom, Health, Computer & Electronics, Career & Education and 25 other categories.
FredHopper is leading in Business & Industry, Shopping, Clothing, Home & Garden and 23 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Netherlands, Germany and 24 other countries.
w3roi is leading in United States, Afghanistan, China, Chile and 3 other countries.