2 Animoji Is More Advanced

This is maybe the biggest difference between the two, and there’s no getting around it: Animoji is more advanced. The feature uses Apple’s cutting-edge TrueDepth Camera, which captures a huge range of subtle facial movements in 3D. That allows for extremely refined facial tracking, and more accurate facial representations.
AR Emoji just can’t compare. Samsung’s front-facing camera is 2D, and doesn’t capture nearly as many facial points as TrueDepth does. That means AR Emoji doesn’t pick up small facial movements and relies on more exaggerated expressions. It also means that it doesn’t track as well: a sunglasses sticker won’t “stick” to the face very well with rapid movement on the S9. Which brings us to the next point…