The ars review is kind of disappointing. They only show GFXBench onscreen results (even though the iPhone 6/6+ has a lower resolution). The battery life test is basically ran with no battery saving techniques (they turned off Adaptive Brightness). On the storage speed it is even pointed out in the comments that Android 5.0 comes with FDE turned on by default, yet no real mention of that in the review (or if it is something that could affect the storage speed).