We now have our first look at the Snapdragon 875 and Exynos 1000's Geekbench scores. The latter convincingly outperforms the former, with a single-core score of 1327 and a multi-core score of 4250. It is also worth noting that those numbers are within spitting distance of the Apple A13 Bionic.
https://www.notebookcheck.net/Alleged-Exynos-1000-Geekbench-score-surfaces-online-Samsung-s-upcoming-SoC-trades-blows-with-Apple-s-A13-Bionic.494641.0.html