Server-side??? Apple requires apps use the Apple WebKit framework only for web content, which runs only on the client-side. The point of Puffin is to run Flash and other desktop crapware websites that don’t work on Mobile Safari (Apple WebKit) properly.
Puffin isn’t a native or local web browser; it’s an optimized, virtual, remote browser viewer. If they sell it as a “Citrix for the web,” they might have a shot.