Most of the previous rumors regarding the ray tracing performance of the Navi 21 GPUs are now confirmed directly via an official slide leaked ahead of the review NDAs. Yes, the RX 6800 XT appears to be slower than the RTX 3080 in select 1440p titles with DXR effects on Ultra, but it also appears to beat the RTX 2080 Ti. However, the situation should get better once AMD launches its own version of DLSS.
https://www.notebookcheck.net/Leaked-slide-shows-AMD-s-RX-6800-XT-1440p-ray-tracing-performance-RTX-3080-looks-to-be-winning-this-battle.504541.0.html