Newzia is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Six Apart Advertising has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Computer & Electronics and 60 other categories.
Newzia hasn't got a lead over Six Apart Advertising in any websites category.
Six Apart Advertising is leading in most countries, including United States, United Kingdom, India, Canada and 9 other countries.
Newzia is leading in Japan.