Samsung Exynos 7570 Advantages
More modern manufacturing process (14nm vs 16nm)
Lower TDP (4W vs 5W)
HiSilicon Kirin 658 Advantages
Better graphics card performance FLOPS (0.0576 TFLOPS vs 0.0208 TFLOPS )
Higher Frequency (2350MHz vs 1400MHz)
Released 7 months late