Amazon Webstore is leading in Top 10K Sites and Top 100K Sites.
Summer Cart has better usage coverage in more websites categories. Including Shopping, Business & Industry, Arts & Entertainment, Clothing and 91 other categories.
Amazon Webstore is leading in General Merchandise, Publications, Tourism, Golf and 4 other categories.
Summer Cart is leading in most countries, including Bulgaria, Turkey, Romania, United Kingdom and 16 other countries.
Amazon Webstore is leading in United States, China, Japan, India and 10 other countries.