The artist created a very simple project for both engines and pointed out the differences for programming by using this example.
Imagine you have a simple cube and an FPS player. This cube has a box Collider that is used as a triggering component that reacts when the player is entering and leaving. On entering the cube is hidden and when the player leaves the box area the cube is shown again.
Jayanam showed the difference between approaches to simulating this situation in Unity and UE4. In Unity you have to code. There is no alternative to coding there. No visual scripting editor, at least not out of the box.
Unreal Engine, on the other hand, has a visual scripting feature called blueprints that can be regarded as a kind of visual representation of source code. Blueprints can make it much easier to simulate different scenarios.
Make sure to watch the full video to learn more about the differences and understand how you can simulate different situations using both engines.