I think they meant to say real-world performance, not actual performance. GPU acceleration affects real-world HTML5 animation techniques, especially on mobile d

I think they meant to say real-world performance, not actual performance. GPU acceleration affects real-world HTML5 animation techniques, especially on mobile devices. It depends on what's being measured. iOS has GPU acceleration support in animation effects, while Android has a JIT enabled JavaScript VM. (iOS restricts code execution which prevents JITs from running, at least in 4.x). The importance of these features greatly depends on the application being executed. Software and hardware acceleration frameworks matter far more in mobile than on the desktop, where battery life, memory, and CPU tuning are crucial and painfully clear when you care about speed.