Mercent is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Shopzilla has better usage coverage in more websites categories. Including Shopping, People & Society, Arts & Entertainment, Business & Industry and 107 other categories.
Mercent is leading in Games, Video Games, Fishing, Food & Grocery Retailers and 21 other categories.
Mercent is leading in most countries, including United States, Ukraine, Iraq, Austria and 32 other countries.
Shopzilla is leading in Russia, India, France, Turkey and 23 other countries.