Evaluate various Ecommerce platforms

I would like you to upload our product list to the top 10 ecommerce websites (e.g. Magento, Shopify, 3dcart). I want you to test search and speed and advise best platforms. Final report in Powerpoint format. Tell me how good the front end/back end is.
1) Support reselling computer parts/spares
2) Over 25K active parts
3) Ability to upload product listing with images. Bulk load and management
4) CMS/BLOG/easy front of house management
5) Templates
6) Excellent search e.g. search by product/part/wild card
7) Integration with our ERP - stock/inventory/order fulfillment
8) Cart + payment methods + gateways
9) API
10) preferably Microsoft stack but flexible
11) Fast