Samsung Exynos 850 Advantages
Lower TDP (3W vs 6W)
Released 7 months late
HiSilicon Kirin 990 5G Advantages
Better graphics card performance FLOPS (0.6912 TFLOPS vs 0.0394 TFLOPS )
Higher Frequency (2860MHz vs 2000MHz)
More modern manufacturing process (7nm vs 8nm)