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 80 other categories.
Commerce Server is leading in Home & Garden, Business Services, Publishing & Printing, Travel and 35 other categories.
Commerce Server is leading in most countries, including United States, Canada, United Kingdom, Germany and 50 other countries.
Summer Cart is leading in Bulgaria, Romania, Turkey, Serbia and 5 other countries.