MediaTek Helio P90 Advantages
Better graphics card performance FLOPS (0.1552 TFLOPS vs 0.096 TFLOPS )
Larger memory bandwidth (13.91GB/s vs 13.41GB/s)
Higher Frequency (2200MHz vs 2000MHz)
MediaTek Helio G91 Advantages
Released 5 years and 7 months late