JavaScript быстрее Python

yes it is

they are both "easier" languages but to a beginner programmer, start off with python and then 
you will find other languages harder yes, but you can focus on learning more syntax than concepts. 
If you are a seasoned programer, then by all means learn js. 

To answer your question in slightly more detail: 
As Towards Data Science puts it, “Python is comparatively slower in performance as it processes requests in a single flow, unlike Node. js, where advanced multithreading is possible.”
Codie da homie