1
Quantcast is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
2
In terms of market share, Gemius is clearly lagging behind, losing to Quantcast in all segments.
1
Quantcast has better usage coverage in more websites categories. Including Arts & Entertainment, Games, Science & Education, Computers Electronics & Technology and 17 other categories.
2
Gemius is leading in News & Media, Vehicles and E-commerce & Shopping.
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Quantcast is leading in most countries, including United States, United Kingdom, Japan, France and 143 other countries.
2
Gemius is leading in Russia, Poland, Hungary, Czech Republic and 12 other countries.