I think that's just like one C++ application being faster than another equivalent C++ application due to using smarter data structures and whatnot. VS Code and

I think that's just like one C++ application being faster than another equivalent C++ application due to using smarter data structures and whatnot. VS Code and Atom have different code bases with different decisions and that makes a difference despite them both using Electron and JS. (Hopefully I have understood your question properly.)