3DStats is leading in Top 100K Sites and Top 1M Sites.
3DStats has better usage coverage in more websites categories. Including Business & Industry, Shopping, Health, People & Society and 68 other categories.
Observer is leading in Computer & Electronics, Arts & Entertainment, Software, Photography and 14 other categories.
3DStats is leading in most countries, including United States, United Kingdom, Switzerland, Spain and 18 other countries.
Observer is leading in Russia, France, Ukraine, Turkey and 3 other countries.