"Superior" for sure isn't the word I'd use, almost every one of the editors and IDEs make a bunch of trade-offs that appeal to different audiences
IMHO, the barrier to entry for modification for both emacs and vim is much lower than their competition: evaluate text in a buffer, observe change to your editor
I don't know of any other tooling has that immediate feedback loop remeniscient of the old JS in HTML (or the dev tools console, as apples to apples) approachability
I am more accustomed to vim than emacs.
Some things I painfully miss when using something else than vim : quick and easy shortcuts to jump around the file, delete words/blocks/parenthesis, place marks to jump between parts of one or multiple files, macros, filtering parts of the file through external command...
