The main issue really is that Apple’s Face ID for iPhones and the iPad Pro requires you to have your eyes open and looking at the device in order for it to register, adding a layer of security.
2D facial recognition on phones like the Samsung Galaxy S20 is less secure and is not allowed for biometric authentication. It also works even if your eyes are closed and can be fooled by photos in some instances.
Google appears to have finally added an option for you to require open eyes for unlocking and authentication – it’s not on by default. To turn it on, update your phone’s software and then go to Settings > Security > Face Unlock > Require eyes to be open.