You might be right, but I think you must take into account that (I think) you're not super familiar with these languages as well, so you might not notice all the warts a programmer with a lot of experience in these langs would, and overrate the skill of the LLM.

Nowadays, I write C# and TS at work, and it's absolutely crazy how much better the LLM is at TS, with almost all code being decent the first try, but with C# I need to do a lot of massaging.