GSI Media is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Spark Studios has better usage coverage in more websites categories. Including Arts & Entertainment, Computer & Electronics, Software, Gambling and 16 other categories.
GSI Media is leading in Shopping, Clothing, Sports, Children and one other category.
GSI Media is leading in most countries, including United States, Thailand and China.
Spark Studios is leading in France and Argentina.