Samsung Exynos 9820 Advantages
Larger memory bandwidth (33.4GB/s vs 29.8GB/s)
More modern manufacturing process (8nm vs 10nm)
Released 11 months late
Qualcomm Snapdragon 845 Advantages
Better graphics card performance FLOPS (0.727 TFLOPS vs 0.607 TFLOPS )
Higher Frequency (2800MHz vs 2730MHz)