> A 20mb app takes the same amount of time to download whether it's a zip file or a WebGL app

You can do a lot more with that when so many dependencies are taken care of. No window creation, no extension loading, no audio layer, no image loading, no dynamic image loading, no libc or libc++, no 'visual studio runtime'

> much more error-prone,

What is that based on?

> have less features,

Why would that be true?