[lewisl9029]

No, I'm not actually assuming that, because I realize there is only negligible difference between major browsers today in terms of rendering performance, and none can approach the rendering performance of native UI frameworks on mobile.

But I am assuming that a browser offering a gigantic leap in UX through native-like rendering performance will entice web app developers to recommend that browser over others, because it's nigh impossible to build a consistently 60fps non trivial app with native-like interactions and transitions on the web today, while Servo and Webrender aim to make 60fps on the web the norm rather than the exception.