MediaTek Helio G90T Advantages
Higher Frequency (2050MHz vs 2000MHz)
Lower TDP (5W vs 6W)
Qualcomm Snapdragon 690 Advantages
Better graphics card performance FLOPS (0.4864 TFLOPS vs 0.2304 TFLOPS )
More modern manufacturing process (8nm vs 12nm)
Released 11 months late