Samsung Exynos 7884B Advantages
More modern manufacturing process (14nm vs 16nm)
Released 2 years and 1 months late
MediaTek Helio P23 Advantages
Better graphics card performance FLOPS (0.0494 TFLOPS vs 0.0493 TFLOPS )
Larger memory bandwidth (12.8GB/s vs 7.8GB/s)
Higher Frequency (2300MHz vs 1560MHz)
Lower TDP (2.5W vs 5W)