MediaTek Helio G80 Advantages
Lower TDP (5W vs 6W)
Released 1 years and 2 months late
Qualcomm Snapdragon 855 Advantages
Better graphics card performance FLOPS (0.8985 TFLOPS vs 0.0912 TFLOPS )
Larger memory bandwidth (34.13GB/s vs 13.41GB/s)
Higher Frequency (2840MHz vs 2000MHz)
More modern manufacturing process (7nm vs 12nm)