Encore Metrics is leading in Top 100K Sites.
Encore Metrics has better usage coverage in more websites categories. Including Travel, Accommodation & Hotels, Business & Industry, Shopping and 22 other categories.
Vertster is leading in People & Society, Computer & Electronics, Computer Hardware, Search Engine and 6 other categories.
Encore Metrics is leading in most countries, including United States, Japan, Brazil, Venezuela and 11 other countries.
Vertster hasn't got a lead over Encore Metrics in any country.