Samsung Exynos 980 Advantages
Better graphics card performance FLOPS (0.2621 TFLOPS vs 0.1552 TFLOPS )
Larger memory bandwidth (34.1GB/s vs 13.91GB/s)
More modern manufacturing process (8nm vs 12nm)
Released 10 months late
MediaTek Helio P90 Advantages
Lower TDP (5W vs 9W)