If you are thinking of having an online store then which platform will you choose? Obviously you will look for the most popular platform and that would be Magento. However, it is important for every business to first understand the features and functions that Magento offers and then decide if you need those features or else you have too many options of eCommerce platforms.
Read more: http://www.sooperarticles.com/internet-articles/ecommerce-articles/why-magento-best-ecommerce-development-platform-1476494.html

I found many ecommerce cms but Magento is perfect for large scale business. Here are I found some good comparison: http://www.cloudways.com/blog/the-best-content-management-systems-cms-for-ecommerce-part-1/