MediaTek Helio X20 Advantages
Better graphics card performance FLOPS (0.0998 TFLOPS vs 0.0816 TFLOPS )
Higher Frequency (2100MHz vs 1820MHz)
Lower TDP (5W vs 10W)
Unisoc Tiger T700 Advantages
More modern manufacturing process (12nm vs 20nm)
Released 5 years and 10 months late