MediaTek Helio G85 Advantages
Lower TDP (5W vs 6W)
Released 9 months late
Qualcomm Snapdragon 855 Plus Advantages
Better graphics card performance FLOPS (1.0368 TFLOPS vs 0.096 TFLOPS )
Larger memory bandwidth (34.13GB/s vs 13.41GB/s)
Higher Frequency (2960MHz vs 2000MHz)
More modern manufacturing process (7nm vs 12nm)