Qualcomm Snapdragon 685 's Advantages
Higher Frequency (2800MHz vs 2730MHz)
More modern manufacturing process (6nm vs 7nm)
Released 3 years and 5 months late
Samsung Exynos 990 's Advantages
Better graphics card performance FLOPS (1.126 TFLOPS vs 0.2432 TFLOPS )
Larger memory bandwidth (44GB/s vs 17GB/s)