Samsung Exynos 850 Advantages
More modern manufacturing process (8nm vs 12nm)
Lower TDP (3W vs 5W)
Released 1 years and 7 months late
MediaTek Helio P70 Advantages
Better graphics card performance FLOPS (0.0972 TFLOPS vs 0.0394 TFLOPS )
Higher Frequency (2100MHz vs 2000MHz)