iOS developer here. Releasing first android version of my app this week. Even though I didn't do the coding, I've taken a look at the code and done quite a bit of testing. The part about animations is totally true. Animations are much faster and smoother on my iPod 3rd Gen than the equivalent animation on a Droid Incredible, which has much better hardware! We've tried to optimize as much as possible, but we are realizing that there is just no way to match the iOS version's speed and responsiveness.