HiSilicon Kirin 820 Advantages
Better graphics card performance FLOPS (0.6528 TFLOPS vs 0.608 TFLOPS )
Samsung Exynos 1380 Advantages
Larger memory bandwidth (51.2GB/s vs 31.78GB/s)
Higher Frequency (2400MHz vs 2360MHz)
More modern manufacturing process (5nm vs 7nm)
Released 2 years and 11 months late