eProof is leading in Top 10K Sites and Top 100K Sites.
w3roi has better usage coverage in more websites categories. Including Internet & Telecom, Business & Industry, Computer & Electronics, Health and 25 other categories.
eProof is leading in News & Media, Adult and Accounting.
w3roi is leading in most countries, including United States, Turkey, China, Canada and 6 other countries.
eProof is leading in United Kingdom.