A Crytek developer by name Ali Sahli in an interview to a Persian gaming site opined that developing for the PlayStation 5 is easier than the Xbox Series X. He also said that the Xbox's higher TFLOP advantage is only applicable in ideal conditions and that the PS5 can better sustain peak performance.
https://www.notebookcheck.net/Contrary-to-previous-reports-Crytek-developer-feels-the-PlayStation-5-can-sustain-its-10-3-TFLOPs-better-and-is-easier-to-develop-for-than-the-Xbox-Series-X.460026.0.html