Samsung Exynos 9609 Advantages
More modern manufacturing process (10nm vs 16nm)
Released 3 years and 1 months late
HiSilicon Kirin 955 Advantages
Better graphics card performance FLOPS (0.1152 TFLOPS vs 0.0918 TFLOPS )
Higher Frequency (2500MHz vs 2200MHz)
Lower TDP (5W vs 9W)