3DStats is leading in Top 100K Sites and Top 1M Sites.
3DStats has better usage coverage in more websites categories. Including Business & Industry, Shopping, People & Society, Health and 68 other categories.
Observer is leading in Arts & Entertainment, Computer & Electronics, Software, Photography and 13 other categories.
3DStats is leading in most countries, including United States, United Kingdom, Germany, Canada and 13 other countries.
Observer is leading in Russia, Japan, France, Korea Republic and 2 other countries.