Qualcomm Snapdragon 678 Advantages
Better graphics card performance FLOPS (0.3244 TFLOPS vs 0.2496 TFLOPS )
Higher Frequency (2200MHz vs 1850MHz)
More modern manufacturing process (11nm vs 14nm)
Released 5 years and 3 months late
Apple A9 Advantages
Lower TDP (5W vs 6W)