Samsung slowing down Exynos versions?
According to the review at Anandtech, Samsung told them they were going to limit the much faster Exynos versions to performance roughly equivalent with the 845. They saw much lower than expected performance on most benchmarks they tried that was on par with the 845, except for Geekbench.
That would be a stupid plan if they did it, but I'd have to laugh if they did after all the Apple haters who thought it was a terrible thing that Apple limited the iPhones with Qualcomm hardware to match the LTE speed of the Intel hardware (i.e. an iPhone X can hit "only" 600 Mbps instead of 1 Gbps max)