I think the advantage ios got is xcode compiles ios app to native code vs android use android java virtual machine.
But android device has 8 cpu at very cheap price which makes the issue irrelevant. My android phone has 8 cpu and cost around 1000 ren ming bi. If samsung sells me that 8 cpu, it will be samsung note 4 equivalent which cost at least nzd600 plus
We paid for my wife samsung note 4 for around nzd935 and my mother in law's samsung note 4 for nzd 750. All brand new nz version with two years warranty.