The editor boots itself up using less bandwidth than the Apple homepage (last time we checked).
Compared to our executable predecessor it even boots up faster after first run.
We’ve focussed a lot on making it performant and get emails from customers telling us they forget they are using a web app.
Web apps don’t have to be “slow as fudge”!
To answer your question, it depends on the type of response time you're asking. If you mean simply button click event fire type responses, then yes native app development is superior. But like I stated if you wa t your app to be truly write once run anywhere, JS web apps are the way to go.....these days at least.
That being said, I only had one go at React and another brief stint with Android app development. I found them both to be complete messes. Maybe I'm so used to my last job doing C# Winforms, but I haven't found a more comfortable experience.