MediaTek Helio P23 Advantages
Larger memory bandwidth (12.8GB/s vs 7.5GB/s)
Higher Frequency (2300MHz vs 2200MHz)
Lower TDP (2.5W vs 11W)
Released 10 months late
Qualcomm Snapdragon 626 Advantages
Better graphics card performance FLOPS (0.1248 TFLOPS vs 0.0494 TFLOPS )
More modern manufacturing process (14nm vs 16nm)