What's the differences with puppeteer-firefox?

[lanzorg]

The google chrome team is already working on something like foxr.
https://github.com/GoogleChrome/puppeteer/tree/master/experimental/puppeteer-firefox

[deepsweet]

When you install puppeteer-firefox, it downloads a custom-built Firefox (Firefox/63.0.4) that is guaranteed to work with the API.

Sounds like their implementation is going to be more feature rich because of that, Marionette protocol doesn't give many things.