Eulerian is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Eulerian has better usage coverage in more websites categories. Including Business & Industry, Finance, Shopping, Financial Management and 52 other categories.
Observer is leading in Computer & Electronics, Internet & Telecom, Software, Marketing & Advertising and 9 other categories.
Eulerian is leading in most countries, including France, United Kingdom, Germany, Netherlands and 13 other countries.
Observer is leading in United States, Russia, China, Czech Republic and 2 other countries.