MediaTek Helio P22 Advantages
Lower TDP (5W vs 6W)
Qualcomm Snapdragon 855 Advantages
Better graphics card performance FLOPS (0.8985 TFLOPS vs 0.041 TFLOPS )
Larger memory bandwidth (34.13GB/s vs 11.92GB/s)
Higher Frequency (2840MHz vs 2000MHz)
More modern manufacturing process (7nm vs 12nm)
Released 7 months late