More likely Woocommerce is #1, 2nd is Magento (but some reports state #1 Magento, #2 Woocommerce). Lots of analytics on this matter, here are some reports: Buitwith:
https://trends.builtwith.com/shop
Datanyze:
https://www.datanyze.com/market-share/e-commerce-platforms/A...
https://www.shopping-cart-migration.com/blog/61-must-know-ti...