YouTuber Erdi Özüağ who has access to both the Exynos 2200 and Snapdragon 8 Gen 1 variants of the Samsung Galaxy S22 Ultra showed that the Xclipse 920 RDNA 2 GPU in the Exynos 2200 SoC puts up an underwhelming performance in benchmarks compared to the Adreno 730 in the Snapdragon 8 Gen 1. While a future OTA update may potentially reduce the performance deltas, the possibility that Samsung's 4 nm process could be having an impact on the Xclipse 920's performance cannot be ruled out.
https://www.notebookcheck.net/Snapdragon-8-Gen-1-s-Adreno-730-shown-to-be-43-faster-than-Exynos-2200-s-Xclipse-920-in-first-Galaxy-S22-Ultra-review-Samsung-s-4-nm-process-could-be-stifling-RDNA-2-clock-and-memory-performance.599758.0.html
So, you know that the Xclipse 920 in the Exynos 2200 supports 'Infinity Cache' do you? With AMD RDNA2 APUs not getting Infinity Cache - a big investment in transistors and die space is required - how do you imagine a mobile SoC would get it?
Look, if you like living in an upside down world take statements by Erdi Özüağ as your guide but you'd be better off if you didn't. Mr. Özüağ's benchmark numbers could be correct but it would be safer if we double checked them.
This shouldn't be terribly surprising. We already had official GPU tests back during the Qualcomm Day snapdragon release event in December.
The various leaks are from random people getting devices of unknown provenance.
The former have a history of presenting accurate information with regards to they soc.
The later is, obviously, a less reliable source.
Regardless, we won't know the details of all of this until AT produces their article.