Samsung Exynos 1280 Advantages
Better graphics card performance FLOPS (0.487 TFLOPS vs 0.2816 TFLOPS )
Higher Frequency (2400MHz vs 2200MHz)
More modern manufacturing process (5nm vs 6nm)
MediaTek Helio G99 Advantages
Larger memory bandwidth (17.1GB/s vs 17GB/s)
Lower TDP (5W vs 6W)