MediaTek Helio G25 Advantages
Lower TDP (2W vs 9W)
Released 2 years and 6 months late
Qualcomm Snapdragon 845 Advantages
Better graphics card performance FLOPS (0.727 TFLOPS vs 0.0418 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 13.9GB/s)
Higher Frequency (2800MHz vs 2000MHz)
More modern manufacturing process (10nm vs 12nm)