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 109 other categories.
Mercent is leading in Games, Video Games, Fishing, Food & Grocery Retailers and 10 other categories.
Mercent is leading in most countries, including United States, Canada, Russia, Indonesia and 61 other countries.
Shopzilla is leading in United Kingdom, India, Australia, Japan and 14 other countries.