MediaTek Helio A22 Advantages
Higher Frequency (2000MHz vs 1800MHz)
More modern manufacturing process (12nm vs 14nm)
Lower TDP (4W vs 5W)
Samsung Exynos 7904 Advantages
Better graphics card performance FLOPS (0.0493 TFLOPS vs 0.0208 TFLOPS )
Released 8 months late