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, Shopping, Products & Shopping and 17 other categories.
Observer is leading in most countries, including United Kingdom, Russia, Germany, Ukraine and 7 other countries.
w3roi is leading in United States, Turkey, China, Canada and 4 other countries.