In terms of market share, Six Apart Advertising is clearly lagging behind, losing to Spark Studios in all segments.
Six Apart Advertising has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Computer & Electronics and 57 other categories.
Spark Studios is leading in Games, Video Games, Adult, Antiques & Collectibles and 4 other categories.
Six Apart Advertising is leading in most countries, including United States, India, Japan, Russia and 12 other countries.
Spark Studios hasn't got a lead over Six Apart Advertising in any country.