Samsung Exynos 7570 Advantages
Better graphics card performance FLOPS (0.0208 TFLOPS vs 0.004 TFLOPS )
Higher Frequency (1400MHz vs 1300MHz)
More modern manufacturing process (14nm vs 28nm)
Released 7 months late
MediaTek MT6580 Advantages
Larger memory bandwidth (4.3GB/s vs 4.2GB/s)