HiSilicon Kirin 655 Advantages
Higher Frequency (2120MHz vs 2000MHz)
Lower TDP (5W vs 10W)
MediaTek Dimensity 720 Advantages
Better graphics card performance FLOPS (0.3264 TFLOPS vs 0.0576 TFLOPS )
More modern manufacturing process (7nm vs 16nm)
Released 3 years and 7 months late