Commerce Server is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Summer Cart has better usage coverage in more websites categories. Including Shopping, Business & Industry, Arts & Entertainment, Clothing and 75 other categories.
Commerce Server is leading in Home & Garden, Business Services, Games, Video Games and 45 other categories.
Commerce Server is leading in most countries, including United States, Great Britain, Canada, Germany and 49 other countries.
Summer Cart is leading in Bulgaria, Romania, Turkey, Russia and 11 other countries.