In terms of market share, Observer is clearly lagging behind, losing to w3roi in all segments.
Observer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Computer & Electronics, People & Society and 19 other categories.
w3roi is leading in Internet & Telecom, Health, Career & Education, Online Marketing and 18 other categories.
w3roi is leading in most countries, including United States, China, India, Colombia and 6 other countries.
Observer is leading in Russia, United Kingdom, Brazil, Egypt and 5 other countries.