AdServerPub is leading in Top 100K Sites and Top 1M Sites.
AdServerPub has better usage coverage in more websites categories. Including Arts & Entertainment, Shopping, People & Society, News & Media and 58 other categories.
Spark Studios hasn't got a lead over AdServerPub in any websites category.
AdServerPub is leading in most countries, including France, Germany, United States, Canada and 42 other countries.
Spark Studios is leading in Poland.