MediaTek Helio G99 Advantages
Lower TDP (5W vs 6W)
Released 1 years and 7 months late
HiSilicon Kirin 9000 Advantages
Better graphics card performance FLOPS (2.3316 TFLOPS vs 0.2816 TFLOPS )
Larger memory bandwidth (44GB/s vs 17.1GB/s)
Higher Frequency (3130MHz vs 2200MHz)
More modern manufacturing process (5nm vs 6nm)