What is the difference between Photoshop’s background removal and Slazzer’s extension?

Adobe Photoshop comes with a built-in automated background removal since the version CC 2020. 

Below you can check a comparison of images processed through Photoshop’s Background Removal and Slazzer’s extension. (Tested with Adobe Photoshop CC 2021)

Human

 

Product

 

Animal

 

Car

 

Graphics