Qualcomm Snapdragon 636 Advantages
Better graphics card performance FLOPS (0.1843 TFLOPS vs 0.0576 TFLOPS )
More modern manufacturing process (14nm vs 16nm)
Released 1 years and 8 months late
MediaTek Helio P20 Advantages
Larger memory bandwidth (12.8GB/s vs 5.3GB/s)
Higher Frequency (2300MHz vs 1800MHz)