I think UE4 API and C++ are easier,faster and better to use than Behavior trees?

I have read the whole tutorial https://docs.unrealengine.com/latest/INT/Engine/AI/BehaviorTrees/QuickStart/12/index.html
and i think the same functionality can be easily implemented using UE4 API easily as compared to Behavior trees and it will be faster than Behavior trees.

What you guys think, are these behavior trees useful?