For those who are interested, here is Unity version of Defold bunnymark middle test (update many from single script).
unity-defold-bunnymark.unitypackage.zip (75.7 KB)
Results from iPhone 5s, latest iOS release:
2500 bunnies
Defold ~55 fps
Unity ~60 fps
3000 bunnies
Defold ~47 fps
Unity ~30 fps
5000 bunnies
Defold ~28fps
Unity ~25 fps
As a reference implementation, SpriteKit version of this benchmark (Objective-C) run at 60 fps with 5000 bunnies.