They’re not implementing game logic in those languages for performance reasons though. The question, as I interpret it, is about why C++‘s performance isn’t an issue for games. Using those languages for scripting/game logic is a trade-off where performance is sacrificed for developer productivity.
I thought it was about the language as efficient tool not about performance. The Unreal engine is not even using data oriented design (at least for most parts), so I was assuming C++ sufficient efficiency was out of question. I agree with your argument, that the games would probably be faster. Game object processing is probably not the most pressing issue in games regarding performance, so I guess the impact would be not that visible (when talking about the stuff that is implemented in C++ in game engines).
