MediaTek Helio G35 Advantages
More modern manufacturing process (12nm vs 14nm)
Lower TDP (2.2W vs 11W)
Released 3 years and 10 months late
Qualcomm Snapdragon 821 Advantages
Better graphics card performance FLOPS (0.3343 TFLOPS vs 0.0435 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 13.9GB/s)
Higher Frequency (2342MHz vs 2300MHz)