My comment was due to the way it's stated, "even possible on any Android device today", meaning that even with excess dev time, the application could not run on the newest Android device.
RAGE works on all the iPhones that support iOS 4, which excludes the original iPhone and iPod touch. However, the hardware on those are reasonably identical to the second generation of devices, so that restriction is an arbitrary one by Apple.
This is probably true. The fact that the current Android SDK requires wrapping OpenGL calls in a Java layer is cited by developers (it's mentioned up-thread) as a hindrance in writing highly performant games. Gruber chose his words carefully though, this is true today but the next Android update supposedly fixes this. We'll see.