Sorry, but I emphatically disagree. Servo entailed creating a new programming language, building a community around that language and using the project as playground for feature validation. This might work for an non-commercial entity but it is not a good example of a rewrite.
It's more about the integration side than the particulars of it. It's a huge project with different goals than ff, so it should be (and is being) treated as such.
It's a huge, audacious, hairy project, which might happen if a startup said "OK let's rewrite everything from scratch!"
