Because Sensei is not actively developed, it's sorta a weird side project, WP Courseware is the better choice between these 2 options. Sensei is just this stalled side project for Automatic that is overly complicated to setup and near impossible to get working right with your theme of choice. Now both of these require a separate e-commerce platform if you want to sell your courses, and a membership plugin to secure the content. No thank you.
Sensei Vs WP Courseware 2020
Sensei is a learning management system for WordPress from the makers of WooCommerce. WooCommerce was acquired by Automatic, the parent company of WordPress itself.
WP Courseware allows you to have online courses on your WordPress website. It’s a solution ideal for people that already have an e-commerce platform and a membership plugin and just want to add courses.