They have the same raw tools but LR offers a better workflow and organization system due to its database (catalog) I'm talking full Photoshop. Elements has a stripped down version of Camera Raw.
If you understand Elements, the catalog is similar.
Thank you. For what I need, I found the organization system in Lightroom to be cumbersome so I may stick with Photoshop and just learn the differences between that and Photoshop Elements.
You can import all your folders, albums, keywords etc. if Organizer is tidy and optimized.
From The LR Library:
File >> Upgrade Photoshop Elements Catalog.
LR also integrates with full Photoshop.