[tyingq]

Yes, it would always be faster, assuming relatively heavy pages. But the reduced number of requests, hpack compression, and server push features in HTTP/2 might reduce the performance improvement to something less impressive.

Given that Polaris has some downsides, it might reduce it to the point that you wouldn't consider it. In it's current state, Polaris requires a lot of pre-work...including dependency analysis via a real browser. It also serves up pages that wouldn't work with javascript disabled, and might not be terribly search engine friendly.