Samsung Exynos 9810 Advantages
Lower TDP (5W vs 8W)
Samsung Exynos 2100 Advantages
Better graphics card performance FLOPS (1.5304 TFLOPS vs 0.3706 TFLOPS )
Larger memory bandwidth (51.2GB/s vs 28.7GB/s)
More modern manufacturing process (5nm vs 10nm)
Released 2 years and 11 months late