Sure, if all you want is to edit some text files, vim is better.
But that's nowhere near what most people use text editors for. If you're writing code, not just editing text files, there's so much more a good editor needs. For that emacs has significant advantages, and I'm saying that as primarily a vim user. REPL integration in vim is a huge pain, plugins only running in the main thread is a huge pain, vimscript is just a horrible language... There really is no comparison in terms of plugin support, and you need plugins if you want the real features.
But that's nowhere near what most people use text editors for. If you're writing code, not just editing text files, there's so much more a good editor needs. For that emacs has significant advantages, and I'm saying that as primarily a vim user. REPL integration in vim is a huge pain, plugins only running in the main thread is a huge pain, vimscript is just a horrible language... There really is no comparison in terms of plugin support, and you need plugins if you want the real features.