eProof is leading in Top 10K Sites and Top 100K Sites.
w3roi has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Health, Computer & Electronics and 31 other categories.
eProof is leading in News & Media, Accounting and Adult.
w3roi is leading in most countries, including United States, Netherlands, India, China and 7 other countries.
eProof hasn't got a lead over w3roi in any country.