MediaTek Dimensity 9400 Advantages
Better graphics card performance FLOPS (4.9521 TFLOPS vs 0.3343 TFLOPS )
Larger memory bandwidth (85.3GB/s vs 29.8GB/s)
Higher Frequency (3630MHz vs 2342MHz)
More modern manufacturing process (3nm vs 14nm)
Released 8 years and 2 months late
Qualcomm Snapdragon 821 Advantages
Lower TDP (11W vs 15W)