Global units of the Samsung Galaxy S20 and S20+ don't only differ from the others by virtue of the Exynos SoC they feature. Apparently, they also use a completely different main camera sensor from the Snapdragon models.
https://www.notebookcheck.net/The-Exynos-Galaxy-S20-and-S20-don-t-use-the-same-main-camera-sensor-as-the-Snapdragon-models.455406.0.html