Samsung Exynos 7870 Advantages
Lower TDP (3W vs 5W)
MediaTek Helio X30 Advantages
Better graphics card performance FLOPS (0.2176 TFLOPS vs 0.0224 TFLOPS )
Higher Frequency (2600MHz vs 1600MHz)
More modern manufacturing process (10nm vs 14nm)
Released 1 years late