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 79 other categories.
Commerce Server is leading in Home & Garden, Business Services, Publishing & Printing, Travel and 36 other categories.
Commerce Server is leading in most countries, including United States, United Kingdom, Canada, Germany and 39 other countries.
Summer Cart is leading in Bulgaria, Romania, Turkey, Russia and 8 other countries.