Samsung Exynos 7420 Advantages
Larger memory bandwidth (24.8GB/s vs 17GB/s)
Qualcomm Snapdragon 765 Advantages
Better graphics card performance FLOPS (0.576 TFLOPS vs 0.1976 TFLOPS )
Higher Frequency (2300MHz vs 2100MHz)
More modern manufacturing process (7nm vs 14nm)
Lower TDP (5W vs 7W)
Released 4 years and 8 months late