Samsung Exynos 7884B Advantages
Better graphics card performance FLOPS (0.0493 TFLOPS vs 0.0416 TFLOPS )
Released 1 years and 3 months late
MediaTek Helio A25 Advantages
Larger memory bandwidth (13.9GB/s vs 7.8GB/s)
Higher Frequency (1800MHz vs 1560MHz)
More modern manufacturing process (12nm vs 14nm)