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, Computer & Electronics, Health and 25 other categories.
eProof is leading in News & Media, Accounting and Adult.
w3roi is leading in most countries, including United States, China, Canada, Russia and 8 other countries.
eProof is leading in Egypt.