MediaTek Helio A25 Advantages
More modern manufacturing process (12nm vs 28nm)
Lower TDP (5W vs 6W)
Released 4 years and 4 months late
Qualcomm Snapdragon 801 Advantages
Better graphics card performance FLOPS (0.148 TFLOPS vs 0.0416 TFLOPS )
Larger memory bandwidth (14.9GB/s vs 13.9GB/s)
Higher Frequency (2500MHz vs 1800MHz)