Samsung Exynos 7870 Advantages
More modern manufacturing process (14nm vs 28nm)
Lower TDP (3W vs 6W)
Released 2 years late
Qualcomm Snapdragon 801 Advantages
Better graphics card performance FLOPS (0.148 TFLOPS vs 0.0224 TFLOPS )
Higher Frequency (2500MHz vs 1600MHz)