Samsung Exynos 7880 Advantages
Better graphics card performance FLOPS (0.0912 TFLOPS vs 0.0576 TFLOPS )
More modern manufacturing process (14nm vs 16nm)
Lower TDP (4W vs 5W)
Released 11 months late
MediaTek Helio P20 Advantages
Higher Frequency (2300MHz vs 1900MHz)