Qualcomm Snapdragon 662 Advantages
Lower TDP (4W vs 5W)
MediaTek Helio G99 Advantages
Better graphics card performance FLOPS (0.2816 TFLOPS vs 0.2432 TFLOPS )
Larger memory bandwidth (17.1GB/s vs 13.9GB/s)
Higher Frequency (2200MHz vs 2000MHz)
More modern manufacturing process (6nm vs 11nm)
Released 2 years and 4 months late