MediaTek Helio G85 Advantages
Better graphics card performance FLOPS (0.096 TFLOPS vs 0.0576 TFLOPS )
Larger memory bandwidth (13.41GB/s vs 12.8GB/s)
More modern manufacturing process (12nm vs 16nm)
Released 4 years and 2 months late
MediaTek Helio P20 Advantages
Higher Frequency (2300MHz vs 2000MHz)