HiSilicon Kirin 710F Advantages
More modern manufacturing process (12nm vs 14nm)
Lower TDP (5W vs 11W)
Released 2 years and 5 months late
Qualcomm Snapdragon 821 Advantages
Better graphics card performance FLOPS (0.3343 TFLOPS vs 0.128 TFLOPS )
Higher Frequency (2342MHz vs 2200MHz)