Samsung Exynos 7880 Advantages
Lower TDP (4W vs 5W)
MediaTek Helio G99 Advantages
Better graphics card performance FLOPS (0.2816 TFLOPS vs 0.0912 TFLOPS )
Larger memory bandwidth (17.1GB/s vs 12.8GB/s)
Higher Frequency (2200MHz vs 1900MHz)
More modern manufacturing process (6nm vs 14nm)
Released 5 years and 4 months late