Qualcomm Snapdragon 821 Advantages
Better graphics card performance FLOPS (0.3343 TFLOPS vs 0.243 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 17.07GB/s)
Higher Frequency (2342MHz vs 2200MHz)
MediaTek Dimensity 700 Advantages
More modern manufacturing process (7nm vs 14nm)
Lower TDP (6W vs 11W)
Released 4 years and 3 months late