I hope so because even when running the android software on the emulator seemed to be slow. The browser took a long time to load, switch between screens and menus, etc. Haven't tried the new version lately though.
The performance on Android devices is definitely worse then on the iPhone/iPad. A lot of it has to do with the fact that Android doesnt seem to hardware accelerate webkit transforms very well. Which means that the performance problems are very noticeable in animations, card transitions and scrollers.
Could you give us more info on the examples / apps that are running unacceptably slow?