3DStats is leading in Top 100K Sites and Top 1M Sites.
3DStats has better usage coverage in more websites categories. Including Business & Industry, Shopping, Arts & Entertainment, People & Society and 83 other categories.
Marktest is leading in TV & Video.
3DStats is leading in most countries, including United States, United Kingdom, Russia, India and 21 other countries.
Marktest is leading in Brazil and Portugal.